1.
Carbine
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A carbine, from French carabine, is a long arm firearm but with a shorter barrel than a rifle or musket. Many carbines are shortened versions of full-length rifles, shooting the same ammunition, while others fire lower-powered ammunition, the smaller size and lighter weight of carbines make them easier to handle. An example of this is the US Armys M4 carbine, which is standard-issue, the carbine was originally a lighter, shortened weapon developed for the cavalry. After the Napoleonic Wars, cavalry began fighting dismounted, using the only for greater mobility. By the American Civil War, dismounted cavalry were mostly the rule, the principal advantage of the carbine was that its length made it very portable. A carbine was typically no longer than a sheathed sabre, and like a sabre was carried arranged to hang clear of the riders elbows. Carbines were usually less accurate and less powerful than the muskets of the infantry, due to a shorter sight plane. With the advent of fast-burning smokeless powder, the velocity disadvantages of a shorter barrel became less of an issue, eventually, the use of horse-mounted cavalry would decline. During the early 19th century, carbines were often developed separately from the rifles and, in many cases, did not even use the same ammunition. A notable weapon developed towards the end of the American Civil War by the Union was the Spencer carbine, one of the very first breechloading, repeating weapons. It had a spring-powered, removable tube magazine in the buttstock which held seven rounds and it was intended to give the cavalry a replacement weapon which could be fired from horseback without the need for awkward reloading after each shot. In the late 19th century, it common for a number of nations to make bolt-action rifles in both full-length and carbine versions. One of the most popular and recognizable carbines were the lever-action Winchester carbines and this made it an ideal choice for cowboys and explorers, as well as other inhabitants of the American West, who could carry a revolver and a carbine, both using the same ammunition. Other nations followed suit after World War I, when they learned that their traditional long-barreled rifles provided little benefit in the trenches, the US M1 carbine was more of a traditional carbine in that it was significantly shorter and lighter, with a 457. A shorter weapon was more convenient when riding in a truck, armored personnel carrier, helicopter, or aircraft, based on the combat experience of World War II, the criteria used for selecting infantry weapons began to change. In addition, improvements in artillery made moving infantry in areas even less practical than it had been. The majority of enemy contacts were at ranges of less than 300 metres, most rounds fired were not aimed at an enemy combatant, but instead fired in the enemys direction to keep them from moving and firing back. These situations did not require a heavy rifle, firing full-power rifle bullets with long-range accuracy, the lower-powered round would also weigh less, allowing a soldier to carry more ammunition
2.
Colombian conflict
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Two of the most important forces that have contributed to the Colombian conflict are multinational companies and the United States. The reasons for fighting vary from group to group, the FARC and other guerrilla movements claim to be fighting for the rights of the poor in Colombia to protect them from government violence and to provide social justice through communism. The Colombian government claims to be fighting for order and stability, the paramilitary groups claim to be reacting to perceived threats by guerrilla movements. Both guerrilla and paramilitary groups have been accused of engaging in drug trafficking, all of the parties engaged in the conflict have been criticized for numerous human rights violations. 16. 9% of the population in Colombia has been a victim of the war. 2.3 million children have been displaced from their homes, in total, one in three of the 7.6 million registered victims of the conflict are children, and since 1985,8,000 minors have disappeared. On 23 June 2016, the Colombian government and the FARC rebels signed a ceasefire deal. However, on October 2,2016, a majority of the Colombian public rejected the deal, in October 2016, Juan Manuel Santos was awarded the Nobel Peace Prize for his efforts to bring the countrys more than 50-year-long civil war to an end. The Colombian government and the FARC on November 24 signed a peace deal. The House of Representatives unanimously approved the plan on November 30, the armed conflict in Colombia emerged due to a combination of economic, political and social factors in the country 60 years ago. In the early period, guerrilla groups like the FARC, the ELN and others focused on slogan of greater equality through communism, in 1985, the FARC co-created the left-wing Patriotic Union political party. Eventually, the UP distanced itself from insurgent groups, initially, a group of Americans began to smuggle marijuana during the decades of the sixties and seventies. Later, the American Mafia began to establish drug trafficking in Colombia in cooperation with local marijuana producers, cocaine manufactured in Colombia were historically mostly consumed in the US as well as Europe. Organized crime in Colombia grew increasingly powerful in the 1970s and 80s with the introduction of drug trafficking to the United States from Colombia. These funds helped finance paramilitaries and guerrillas, allowing organizations to buy weapons which were then sometimes used to attack military. During the presidency of Álvaro Uribe, the government applied more pressure on the FARC. After the offensive, many security indicators improved, as part of a controversial peace process, the AUC as a formal organization had ceased to function. Colombia achieved a great decrease in production, leading White House drug czar R. Gil Kerlikowske to announce that Colombia is no longer the worlds biggest producer of cocaine
3.
Kosovo War
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The Kosovo War was an armed conflict in Kosovo that lasted from 5 March 1998 until 11 June 1999. After attempts at a diplomatic solution failed, NATO intervened, justifying the campaign in Kosovo as a humanitarian war and this precipitated a mass expulsion of Kosovar Albanians as the Yugoslav forces continued to fight during the aerial bombardment of Yugoslavia. The war ended with the Kumanovo Treaty, with Yugoslav and Serb forces agreeing to withdraw from Kosovo to make way for an international presence, Kosovos borders did not precisely match the areas of ethnic Albanian settlement in Yugoslavia. Kosovos formal autonomy, established under the 1945 Yugoslav constitution, initially meant relatively little in practice, the secret police cracked down hard on nationalists. In 1956 a number of Albanians went on trial in Kosovo on charges of espionage, the threat of separatism was in fact minimal, as the few underground groups aiming for union with Albania had little political significance. Demaci himself was imprisoned in 1964 along with many of his followers, Yugoslavia underwent a period of economic and political crisis in 1969, as a massive government program of economic reform widened the gap between the rich north and poor south of the country. Student demonstrations and riots in Belgrade in June 1968 spread to Kosovo in November of the same year, however, Tito conceded some of the students demands—in particular, representative powers for Albanians in both the Serbian and Yugoslav state bodies and better recognition of the Albanian language. The University of Pristina was established as an independent institution in 1970, the lack of Albanian-language educational materials in Yugoslavia hampered the Albanisation of education in Kosovo, so an agreement was struck with Albania itself to supply textbooks. In 1974 Kosovos political status improved further when a new Yugoslav constitution granted a set of political rights. Along with Vojvodina, Kosovo was declared a province and gained many of the powers of a fully-fledged republic, power was still exercised by the Communist Party, but it was now devolved mainly to ethnic Albanian communists. Titos death on 4 May 1980 ushered in a period of political instability, worsened by growing economic crisis. The disturbances were quelled by the Presidency of Yugoslavia proclaiming a state of emergency, sending in riot police and the army, hard-liners instituted a fierce crackdown on nationalism of all kinds, Albanian and Serbian alike. Kosovo endured a heavy secret-police presence throughout most of the 1980s that ruthlessly suppressed any unauthorised nationalist manifestations, according to a report quoted by Mark Thompson, as many as 580,000 inhabitants of Kosovo were arrested, interrogated, interned or reprimanded. Thousands of these lost their jobs or were expelled from their educational establishments, during this time tension between the Albanian and Serbian communities continued to escalate. Such concerns did attract interest in Belgrade, stories appeared from time to time in the Belgrade media claiming that Serbs and Montenegrins were being persecuted. There was a perception among Serbian nationalists that Serbs were being driven out of Kosovo, in addition to all this, the worsening state of Kosovos economy made the province a poor choice for Serbs seeking work. Albanians, as well as Serbs, tended to favor their compatriots when hiring new employees, Kosovo was the poorest entity of Yugoslavia, the average per capita income was $795, compared with the national average of $2,635. 33 nationalist formations were dismantled by Yugoslav police, who sentenced some 280 people and seized arms caches, in Kosovo an increasingly poisonous atmosphere between Serbs and Albanians led to wild rumors being spread and otherwise trivial incidents being blown out of proportion
4.
Iraq War
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The Iraq War was a protracted armed conflict that began in 2003 with the invasion of Iraq by a United States-led coalition that toppled the government of Saddam Hussein. The conflict continued for much of the decade as an insurgency emerged to oppose the occupying forces. An estimated 151,000 to 600,000 or more Iraqis were killed in the first 3–4 years of conflict and it became re-involved in 2014 at the head of a new coalition, the insurgency and many dimensions of the civil armed conflict continue. The invasion began on 20 March 2003, with the U. S. joined by the United Kingdom and several allies, launching a shock. Iraqi forces were overwhelmed as U. S. forces swept through the country. The invasion led to the collapse of the Baathist government, President Hussein was captured during Operation Red Dawn in December of that same year, the United States responded with a troop surge in 2007. The winding down of U. S. involvement in Iraq accelerated under President Barack Obama, the U. S. formally withdrew all combat troops from Iraq by December 2011. Select U. S. officials accused Saddam of harboring and supporting al-Qaeda, while others cited the desire to end a repressive dictatorship, after the invasion, no substantial evidence was found to verify the initial claims about WMDs. The rationale and misrepresentation of pre-war intelligence faced heavy criticism within the U. S. in the aftermath of the invasion, Iraq held multi-party elections in 2005. Nouri al-Maliki became Prime Minister in 2006 and remained in office until 2014, the al-Maliki government enacted policies that were widely seen as having the effect of alienating the countrys Sunni minority and worsening sectarian tensions. The Iraq War caused hundreds of thousands of civilian, and thousands of military casualties, the majority of casualties occurred as a result of the insurgency and civil conflicts between 2004 and 2007. A1990 Frontline report on The arming of Iraq said, Officially, most Western nations participated in an arms embargo against Iraq during the 1980s. Western companies, primarily in Germany and Great Britain, but also in the United States, sold Iraq the key technology for its chemical, missile, any Western governments seemed remarkably indifferent, if not enthusiastic, about those deals. N Washington, the government consistently followed a policy which allowed and perhaps encouraged the growth of Saddam Husseins arsenal. The Western arming of Iraq took place in the context of the Iran-Iraq War, prior to September 2002, the CIA was the George W. Bush administrations main provider of intelligence on Iraq. The agency was out to disprove linkage between Iraq and terrorism the Pentagon adviser told me, the U. N. had prohibited Iraq from developing or possessing such weapons after the Gulf War and required Iraq to permit inspections confirming compliance. This was confirmed by The New York Times and The Wall Street Journal, during 2002, Bush repeatedly warned of military action against Iraq unless inspections were allowed to progress unfettered. In accordance with U. N. Security Council Resolution 1441, Iraq agreed to new inspections under United Nations Monitoring, as part of its weapons inspection obligations, Iraq was required to supply a full declaration of its current weapons capabilities and manufacturing
5.
Syrian Civil War
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The Syrian Civil War is an armed conflict taking place in Syria. Syrian opposition groups formed the Free Syrian Army and seized control of the area surrounding Aleppo, over time, some factions of the Syrian opposition split from their original moderate position to pursue an Islamist vision for Syria, joining groups such as al-Nusra Front and ISIL. In 2015, the YPG joined forces with Arab, Assyrian, Armenian, Russia and Hezbollah militarily engaged in support of the Syrian government, while beginning in 2014, a coalition of NATO countries began launching airstrikes against ISIL. International organizations have accused the Syrian government, ISIL, and rebel groups of human rights violations. The conflict has caused a major refugee crisis, over the course of the war a number of peace initiatives have been launched, including the March 2017 Geneva peace talks on Syria led by the United Nations, but fighting continues. Syria became an independent republic in 1946, although democratic rule ended with a coup in March 1949, a popular uprising against military rule in 1954 saw the army transfer power to civilians. From 1958 to 1961, a union with Egypt replaced Syrias parliamentary system with a highly centralized presidential government. The secular Baath Syrian Regional Branch government came to power through a successful coup détat in 1963, for the next several years Syria went through additional coups and changes in leadership. In March 1971, Hafez al-Assad, an Alawite, declared himself President, on 31 January 1973, Hafez al-Assad implemented a new constitution, which led to a national crisis. They labeled Assad the enemy of Allah and called for a jihad against his rule, the government survived a series of armed revolts by Sunni Islamists, mainly members of the Muslim Brotherhood, from 1976 until 1982. Upon Hafez al-Assads death in 2000, his son Bashar al-Assad was elected as President of Syria, Bashar al-Assad and his wife Asma, a Sunni Muslim born and educated in Britain, initially inspired hopes for democratic reforms. The Damascus Spring, a period of social and political debate, the Damascus Spring largely ended in August 2001 with the arrest and imprisonment of ten leading activists who had called for democratic elections and a campaign of civil disobedience. In the opinion of his critics, Bashar al-Assad had failed to deliver on promised reforms, Syrian Arabs, together with some 600,000 Palestinian Arabs, make up roughly 74 percent of the population. Syria Muslims are 74 percent Sunnis, and 13 percent Shias,3 percent were Druze, not all of the Sunnis are Arabs. Bashar is married to a Sunni, with whom he has several children and he is affiliated with the sect that his parents belong to, the minority Alawite sect which comprises an estimated 8-12 percent of the total population. Assyrians, an indigenous Eastern Aramaic-speaking Christian Semitic people, numbering approximately 500,000, are mainly in northeast Syria. A larger population lives over the border in northern Iraq, other ethnic groups include Armenians, Circassians, Turkmens, Greeks, Mhallami, Kawliya, Yezidi, Shabaks, and Mandeans. Socioeconomic inequality increased significantly after free market policies were initiated by Hafez al-Assad in his later years, the country also faced particularly high youth unemployment rates
6.
2013 Lahad Datu standoff
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The 2013 Lahad Datu standoff was a military conflict that started on 11 February 2013 and fully ended on 24 March 2013. The standoff arose after 235 militants, some of whom were armed, arrived by boats in Lahad Datu, Sabah, Malaysia from Simunul island, Tawi-Tawi, in the southern Philippines, on 11 February 2013. The group, calling themselves the Royal Security Forces of the Sultanate of Sulu and North Borneo, was sent by Jamalul Kiram III, Kiram III stated that their objective was to assert the unresolved territorial claim of the Philippines to eastern Sabah. At the end of the standoff, around 56 militants were killed together with 6 civilians and 10 Malaysian security forces, the Philippines retains a dormant territorial claim to eastern Sabah, formerly known as North Borneo, through the heritage of the Sultanate of Sulu. The basis of this claim is that the dominion of the sultanate has historically spanned from the Sulu Archipelago into parts of northern Borneo and it is acknowledged that a request for payment to the defunct-Sultanate of Sulu was revived by the Philippine government during a meeting of Maphilindo in 1963. The Philippine government at the said they have no problem with the formation of Malaysia. The first Malaysian Prime Minister at the time, Tunku Abdul Rahman said he would go back to Kuala Lumpur and get on the request. Since then, the Malaysian embassy in the Philippines issues a cheque in the amount of 5,300 ringgit to the counsel of the heirs of the Sultan of Sulu every year in keeping with the terms. Malaysia considers the amount an annual payment for the disputed state. Another factor behind the standoff is the status of the Sultanate of Sulu. The Filipino group in Lahad Datu claims to represent Jamalul Kiram III as the Sultan of Sulu, however, his status as sultan is disputed by several other claimants. He appointed his brother and Raja Muda, Agbimuddin Kiram, to lead the group, around eighty people fled from 15 homes in Tanduo. Malaysian police blockaded roads leading from Lahad Datu to the village of Tanduo. Malaysian police patrol boats also patrolled nearby waters, at the same time, Filipino security agencies blocked off entry from southern Philippines. The Philippines also deployed six ships to the seas of Sulu. An additional Philippine naval ship was sent to Malaysian waters off Lahad Datu to provide humanitarian assistance, on 26 February 2013, President Aquino appealed to Kiram III to recall his followers and to hold discussions with the government to address his familys concerns. Addressing Kiram III, he said, It must be clear to you that this group of people will not succeed in addressing your grievances. Aquino also reminded him that as a Filipino citizen, he is bound by the Constitution of the Philippines and he said a dialogue to address the countrys territorial dispute to eastern Sabah could be arranged after those involved in the standoff came home immediately
7.
Close Quarters Battle Receiver
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The Close Quarter Battle Receiver is a replacement upper receiver for the M4A1 Carbine, developed by the US Navy. The CQBR replaces the M4 with a barrel 10.3 in length and this shorter barrel makes the weapon significantly more compact, which makes it easier to use in and around vehicles and in tight confined spaces. Special units such as commandos boarding ships and bodyguards for senior officers have found such shortened weapons very useful and its preliminary National Stock Number was 1005-LL-L99-5996, however, a complete CQBR-equipped carbine now has the NSN 1005-01-527-2288. The overall length of the receiver is 19.25 inches. With the stock retracted, the length of the weapon is 26.75 inches. One of two proposed special mission receivers that were planned for inclusion into the SOPMOD Block II kit, the CQBR is designed to provide improvement over previous AR-15/M16-type weapons in this category. The CQBR is usually issued as a weapon system. It is also used by Marine Force Recons CQB operators, and is in most cases the weapons of choice for said operators where the range. The short 10.3 in barrel length requires special modifications to reliably function, the gas port is opened from 0.062 to 0.070 in. A one-piece McFarland gas ring replaces the three-piece gas ring set, the standard four-coil extractor spring is replaced with a commercial off-the-shelf five-coil spring. An O-ring surrounds the extractor spring, the standard M4 flash hider has been replaced with the M4QD flash hider for suppressor compatibility. CQBR type 1, Made from M4A1 uppers by shortening the barrels and opening gas ports, no longer produced, h2 needed for MK 262/R2LP & will run M193/M855. H3 may be needed for a case, or when the gas port is eroded. CQBR type 2A, NSWC assembled with contracted and /or overhauled parts, the buffer in the host carbine would be used or upgraded as necessary via the supply system same as type 2. CQBR type 3, Colt-contracted upper complete with all accessories, the buffer in the host carbine would be used or upgraded as necessary via the supply system same as type 2. CQBR type 3A, Colt-contracted upper naked without any accessories or buffer supplied, the buffer in the host carbine would be used or upgraded as necessary via the supply system same as type 2. Units will balance buffer to ammo requirements, H okay with M193/M855, h2 needed for MK 262/ R2LP & will run M193/M855. H3 may be needed for an extreme cases or when the gas port is eroded, MK18 type 2, Colt-contracted carbine complete with all accessories H buffer supplied
8.
Pound (mass)
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The pound or pound-mass is a unit of mass used in the imperial, United States customary and other systems of measurement. The international standard symbol for the pound is lb. The unit is descended from the Roman libra, the English word pound is cognate with, among others, German Pfund, Dutch pond, and Swedish pund. All ultimately derive from a borrowing into Proto-Germanic of the Latin expression lībra pondō, usage of the unqualified term pound reflects the historical conflation of mass and weight. This accounts for the modern distinguishing terms pound-mass and pound-force, the United States and countries of the Commonwealth of Nations agreed upon common definitions for the pound and the yard. Since 1 July 1959, the avoirdupois pound has been defined as exactly 0.45359237 kg. In the United Kingdom, the use of the pound was implemented in the Weights and Measures Act 1963.9144 metre exactly. An avoirdupois pound is equal to 16 avoirdupois ounces and to exactly 7,000 grains, the conversion factor between the kilogram and the international pound was therefore chosen to be divisible by 7, and an grain is thus equal to exactly 64.79891 milligrams. The US has not adopted the system despite many efforts to do so. Historically, in different parts of the world, at different points in time, and for different applications, the libra is an ancient Roman unit of mass that was equivalent to approximately 328.9 grams. It was divided into 12 unciae, or ounces, the libra is the origin of the abbreviation for pound, lb. A number of different definitions of the pound have historically used in Britain. Amongst these were the avoirdupois pound and the tower, merchants. Historically, the sterling was a tower pound of silver. In 1528, the standard was changed to the Troy pound, the avoirdupois pound, also known as the wool pound, first came into general use c. It was initially equal to 6992 troy grains, the pound avoirdupois was divided into 16 ounces. During the reign of Queen Elizabeth, the pound was redefined as 7,000 troy grains. Since then, the grain has often been a part of the avoirdupois system
9.
Kilogram
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The kilogram or kilogramme is the base unit of mass in the International System of Units and is defined as being equal to the mass of the International Prototype of the Kilogram. The avoirdupois pound, used in both the imperial and US customary systems, is defined as exactly 0.45359237 kg, making one kilogram approximately equal to 2.2046 avoirdupois pounds. Other traditional units of weight and mass around the world are also defined in terms of the kilogram, the gram, 1/1000 of a kilogram, was provisionally defined in 1795 as the mass of one cubic centimeter of water at the melting point of ice. The final kilogram, manufactured as a prototype in 1799 and from which the IPK was derived in 1875, had an equal to the mass of 1 dm3 of water at its maximum density. The kilogram is the only SI base unit with an SI prefix as part of its name and it is also the only SI unit that is still directly defined by an artifact rather than a fundamental physical property that can be reproduced in different laboratories. Three other base units and 17 derived units in the SI system are defined relative to the kilogram, only 8 other units do not require the kilogram in their definition, temperature, time and frequency, length, and angle. At its 2011 meeting, the CGPM agreed in principle that the kilogram should be redefined in terms of the Planck constant, the decision was originally deferred until 2014, in 2014 it was deferred again until the next meeting. There are currently several different proposals for the redefinition, these are described in the Proposed Future Definitions section below, the International Prototype Kilogram is rarely used or handled. In the decree of 1795, the term gramme thus replaced gravet, the French spelling was adopted in the United Kingdom when the word was used for the first time in English in 1797, with the spelling kilogram being adopted in the United States. In the United Kingdom both spellings are used, with kilogram having become by far the more common, UK law regulating the units to be used when trading by weight or measure does not prevent the use of either spelling. In the 19th century the French word kilo, a shortening of kilogramme, was imported into the English language where it has used to mean both kilogram and kilometer. In 1935 this was adopted by the IEC as the Giorgi system, now known as MKS system. In 1948 the CGPM commissioned the CIPM to make recommendations for a practical system of units of measurement. This led to the launch of SI in 1960 and the subsequent publication of the SI Brochure, the kilogram is a unit of mass, a property which corresponds to the common perception of how heavy an object is. Mass is a property, that is, it is related to the tendency of an object at rest to remain at rest, or if in motion to remain in motion at a constant velocity. Accordingly, for astronauts in microgravity, no effort is required to hold objects off the cabin floor, they are weightless. However, since objects in microgravity still retain their mass and inertia, the ratio of the force of gravity on the two objects, measured by the scale, is equal to the ratio of their masses. On April 7,1795, the gram was decreed in France to be the weight of a volume of pure water equal to the cube of the hundredth part of the metre
10.
Stock (firearms)
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Stocks are also found on crossbows though a crossbow stock would be more properly referred to as a tiller. The stock provides a means for the shooter to support the device. The stock also transmits recoil into the shooters body, the term stock in reference to firearms dates to 1571 is derived from the Germanic word stoc, meaning tree trunk, referring to the wooden nature of the gunstock. Early hand cannons used a simple stick fitted into a socket in the end to provide a handle. The modern gunstock shape began to evolve with the introduction of the arquebus, a matchlock with a longer barrel and an actual lock mechanism, unlike the hand-applied match of the hand cannon. Firing a hand cannon requires careful application of the match while simultaneously aiming, with both hands available to aim, the arquebus could be braced with the shoulder, giving rise to the basic gunstock shape that has survived for over 500 years. This greatly improved the accuracy of the arquebus, to a level that would not be surpassed until the advent of rifled barrels, techniques for gunstock hand weapons are being revived by martial arts such as Okichitaw. A gunstock is broadly divided into two parts, the rear portion is the butt and front portion is the fore-end. The butt is further divided into the comb, heel, toe, the stock pictured is a thumbhole style. The most basic breakdown of types is into one-piece and two piece stocks. A one piece stock is a unit from butt to fore-end. Two piece stocks use a piece for the butt and fore-end, such as that commonly found on break open shotguns. Traditionally, two stocks were easier to make, since finding a wood blank suitable for a long one piece stock is harder than finding short blanks for a two piece stock. The grip area is one that varies widely, the semi-grip stock is perhaps the most common sporting stock, with a steeper angle cut into the stock to provide a more diagonal angle for the trigger hand. Modern target style stocks have moved towards a fuller, more vertical grip, though built into the rather than made as a separate piece. Anschütz stocks, for example, use a vertical grip. Sliding or folding stocks are often seen on military-grade weapons and their civilian-derived arms, a collapsible stock makes the weapon more compact for storage or transport, but is usually deployed before shooting for better control. These stocks are used on combat shotguns like the Franchi SPAS-12 to allow the stock to collapse when not in use
11.
Gun barrel
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A gun barrel is a part of firearms and artillery pieces. The hollow interior of the barrel is called the bore, a gun barrel must be able to hold in the expanding gas produced by the propellants to ensure that optimum muzzle velocity is attained by the projectile as it is being pushed out by the expanding gas. Modern small arms barrels are made of known and tested to withstand the pressures involved. Artillery pieces are made by various techniques providing reliably sufficient strength, early firearms were muzzle-loading, with powder, and then shot loaded from the muzzle, capable of only a low rate of fire. During the 19th century effective mechanical locks were invented that sealed a breech-loading weapon against the escape of propellant gases, the early Chinese, the inventors of gunpowder, used bamboo, a naturally tubular stalk, as the first barrels in gunpowder projectile weapons. Early European guns were made of iron, usually with several strengthening bands of the metal wrapped around circular wrought iron rings. The Chinese were the first to master cast-iron cannon barrels, early cannon barrels were very thick for their caliber. Bore evacuator Bore snake Cannon Muzzle Polygonal rifling Rifling Slug barrel Smoothbore
12.
Cartridge (firearms)
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Military and commercial producers continue to pursue the goal of caseless ammunition. A cartridge without a bullet is called a blank, One that is completely inert is called a dummy. Some artillery ammunition uses the same concept as found in small arms. In other cases, the shell is separate from the propellant charge. In popular use, the bullet is often misused to refer to a complete cartridge. The cartridge case seals a firing chamber in all directions excepting the bore, a firing pin strikes the primer and ignites it. The primer compound deflagrates, it does not detonate, a jet of burning gas from the primer ignites the propellant. Gases from the burning powder pressurize and expand the case to seal it against the chamber wall and these propellant gases push on the bullet base. In response to pressure, the bullet will move in the path of least resistance which is down the bore of the barrel. After the bullet leaves the barrel, the pressure drops to atmospheric pressure. The case, which had been expanded by chamber pressure. This eases removal of the case from the chamber, brass is a commonly used case material because it is resistant to corrosion. A brass case head can be work-hardened to withstand the pressures of cartridges. The neck and body portion of a case is easily annealed to make the case ductile enough to allow reforming so that it can be reloaded many times. Steel is used in some plinking ammunition, as well as in military ammunition. Steel is less expensive than brass, but it is not feasible to reload, Military forces typically consider small arms cartridge cases to be disposable, one-time-use devices. However, case weight affects how much ammunition a soldier can carry, conversely, steel is more susceptible to contamination and damage so all such cases are varnished or otherwise sealed against the elements. One downside caused by the strength of steel in the neck of these cases is that propellant gas can blow back past the neck
13.
Caliber
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In guns, particularly firearms, caliber or calibre is the approximate internal diameter of the barrel, or the diameter of the projectile it fires, in hundredths or sometimes thousandths of an inch. For example, a 45 caliber firearm has a diameter of.45 of an inch. Barrel diameters can also be expressed using metric dimensions, as in 9mm pistol, when the barrel diameter is given in inches, the abbreviation cal can be used. Good performance requires a bullet to closely match the diameter of a barrel to ensure a good seal. While modern cartridges and cartridge firearms are referred to by the cartridge name. Firearm calibers outside the range of 17 to 50 exist, but are rarely encountered. Larger calibers, such as.577.585.600.700, the.950 JDJ is the only known cartridge beyond 79 caliber used in a rifle. Referring to artillery, caliber is used to describe the length as multiples of the bore diameter. A 5-inch 50 calibre gun has a diameter of 5 in. The main guns of the USS Missouri are 1650 caliber, makers of early cartridge arms had to invent methods of naming the cartridges, since no established convention existed then. One of the early established cartridge arms was the Spencer repeating rifle, later various derivatives were created using the same basic cartridge, but with smaller-diameter bullets, these were named by the cartridge diameter at the base and mouth. The original No.56 became the. 56-56, and the smaller versions. 56-52. 56-50, the. 56-52, the most common of the new calibers, used a 50-cal bullet. Optionally, the weight in grains was designated, e. g. 45-70-405. Variations on these methods persist today, with new cartridges such as the.204 Ruger, metric diameters for small arms refer to cartridge dimensions and are expressed with an × between the bore diameter and the length of the cartridge case, for example,7. 62×51 NATO. This indicates that the diameter is 7. 62mm, loaded in a case 51mm long. Similarly, the 6. 5×55 Swedish cartridge has a diameter of 6.5 mm. An exception to rule is the proprietary cartridge used by U. S. maker Lazzeroni. The following table lists commonly used calibers where both metric and imperial are used as equivalents
14.
Action (firearms)
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In firearms terminology, an action is the mechanism that handles the ammunition or the method by which that mechanism works. Breech-loading weapons have actions, actions are not present on muzzleloaders. The mechanism that fires a muzzle-loader is called the lock, actions can be categorized in several ways, including single action versus double action, break action versus bolt action, and others. The term action can also short, long, and magnum if it is in reference to the length of the rifle’s receiver. The short action rifle usually can accommodate a cartridge length of 2.8 in or smaller, the long action rifle can accommodate a cartridge of 3.34 in, and the magnum action rifle can accommodate cartridges of 3.6 in, or longer in length. Manual operation is a term describing any type of firearm action that is loaded one shot at a time by the user rather than automatically. For example, break action is a form of operation using a simple hinge mechanism that is manually unlatched by the operator. These are actions wherein the breechblock lowers or drops into the receiver to open the breech, there are two principal types of dropping block, the tilting block and the falling block. In a tilting or pivoting block action, the breechblock is hinged on a pin mounted at the rear, when the lever is operated, the block tilts down and forward, exposing the chamber. The best-known pivoting block designs are the Peabody, the Peabody–Martini, the original Peabody rifles, manufactured by the Providence Tool Company, used a manually cocked side-hammer. The 1871 Martini–Henry which replaced the trapdoor Snider–Enfield was the standard British Army rifle of the later Victorian era, charles H. Ballards self-cocking tilting-block action was produced by the Marlin Firearms Company from 1875, and earned a superlative reputation among long-range Creedmoor target shooters. Surviving Marlin Ballards are today highly prized by collectors, especially those mounted in the elaborate Swiss-style Schützen stocks of the day. A falling-block action is a firearm action in which a solid metal breechblock slides vertically in grooves cut into the breech of the weapon. Examples of firearms using the falling block action are the Sharps rifle, in a rolling block action the breechblock takes the form of a part-cylinder, with a pivot pin through its axis. The operator rotates or rolls the block to open and close the breech, it is a simple, rugged, a break action is a type of firearm where the barrel are hinged and can be broken open to expose the breech. The earliest metallic-cartridge breechloaders designed for military issue began as conversions of muzzle-loading rifle-muskets. The upper rear portion of the barrel was filed or milled away, an internal angled firing pin allowed the re-use of the rifles existing side-hammer. The Allin action made by Springfield Arsenal in the US hinged forward, france countered in 1866 with its superior Chassepot rifle, also a paper-cartridge bolt action
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Gas-operated
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Gas-operation is a system of operation used to provide energy to operate autoloading firearms. In gas operation, a portion of high-pressure gas from the cartridge being fired is used to power a mechanism to extract the spent case, energy from the gas is harnessed through either a port in the barrel or a trap at the muzzle. Most current gas systems employ some type of piston, the face of the piston is acted upon by combustion gas from a port in the barrel or a trap at the muzzle. Early guns such as Brownings flapper prototype, the Bang rifle and this, combined with more massive operating parts, reduced the strain on the mechanism. To simplify and lighten the firearm, gas from nearer the chamber needed to be used and this high pressure and has sufficient force to destroy a firearm unless it is regulated somehow. Most gas-operated firearms rely on tuning the gas port size, mass of operating parts, several other methods are employed to regulate the energy. The M1 carbine incorporates a short piston, or tappet. This movement is restricted by a shoulder recess. Excess gas is then vented back into the bore, the M14 rifle and M60 GPMG use the White expansion and cutoff system to stop gas from entering the cylinder once the piston has traveled a short distance. Most systems, however, vent excess gas into the atmosphere through slots, holes, a gas trap system involves trapping combustion gas as it leaves the muzzle. This gas impinges on a surface that converts the energy to motion that, hiram Maxim patented a muzzle-cup system in 1884 described in U. S. Patent 319,596 though it is if this firearm was ever prototyped. John Browning used gas trapped at the muzzle to operate a flapper in the earliest prototype gas-operated firearm described in U. S, the Danish Bang rifle used a muzzle cup blown forward by muzzle gas to operate the action through transfer bars and leverage. Other gas-trap rifles were early production US gas-trap M1 Garands, German Gewehr 41 and these systems are longer, heavier, dirtier and more complex than later gas-operated firearms. Despite these disadvantages, they used relatively low gas and did not require a hole in the barrel. The American and German governments both had requirements that their guns operated without a hole being drilled in the barrel, both governments would first adopt weapons and later abandon the concept. All US M1 Garand rifles were retrofitted with long-stroke gas pistons, with a long-stroke system, the piston is mechanically fixed to the bolt group and moves through the entire operating cycle. This system is used in such as the Bren light machine gun, AK-47, Tavor, FN Minimi, M249 Squad Automatic Weapon, FN MAG, FN FNC
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Rotating bolt
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Rotating bolt is a method of locking used in firearms. Johann Nicolaus von Dreyse developed the first rotating bolt firearm, the Dreyse needle gun in 1836, the Dreyse locked using the bolt handle rather than lugs on the bolt head like the Mauser M98 or M16. The first rotating bolt rifle with two lugs on the head was the Lebel Model 1886 rifle. The concept has been implemented on most firearms chambered for high powered cartridges since the 20th century, Mannlicher then developed the Mannlicher 1900 rifle which had a rotating bolt and was operated by a gas piston. Upon closing, the bolt goes forward into barrel extension or locking recesses in the receiver, in this way it functions as a delay, ensuring that the bolt remains locked until chamber pressure has subsided to a safe level. Rotating bolts are found in delayed blowback, gas-operated, recoil-operated, another form of delayed blowback which the bolt head rotates as the firing pin strikes locking the chamber until the gas pressure reaches a safe level to extract. As the firing pin retracts, the head turns anti-clockwise unlocking the breech. Computer Animation demonstrating rotating bolt in the M16 Primer actuated M16 using rotating bolt
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Box magazine
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A magazine is an ammunition storage and feeding device within or attached to a repeating firearm. Magazines can be removable or integral to the firearm, the magazine functions by moving the cartridges stored in the magazine into a position where they may be loaded into the chamber by the action of the firearm. The detachable magazine is often referred to as a clip, although this is technically inaccurate, magazines come in many shapes and sizes, from those of bolt-action express rifles that hold only a few rounds to drum magazines for self-loading rifles that can hold one hundred rounds or more. Various jurisdictions ban what they define as high-capacity magazines, with the increased use of semi-automatic and automatic firearms, the detachable box magazine became increasingly common. Soon after the adoption of the M1911 pistol, the magazine was settled on by the military and firearms experts. The defining difference between clips and magazines is the presence of a mechanism in a magazine, typically a spring-loaded follower. Use of the clip to refer to detachable magazines is a point of strong disagreement. The first mass-produced repeater was the Volcanic Rifle which used a bullet with the base filled with powder and primer fed into the chamber from a spring-loaded tube called a magazine. It was named after a building or room used to store ammunition, the anemic power of the Rocket Ball ammunition used in the Volcanic doomed it to limited popularity. The Henry repeating rifle is a lever-action, breech-loading, tubular magazine fed rifle, designed by Benjamin Tyler Henry in 1860, it was one of the first firearms to use self-contained metallic cartridges. The Henry was introduced in the early 1860s and produced through 1866 in the United States by the New Haven Arms Company and it was adopted in small quantities by the Union in the Civil War and favored for its greater firepower than the standard issue carbine. Many later found their way West and was famed both for its use at the Battle of the Little Bighorn, and being the basis for the iconic Winchester rifle which are made to this day. The Henry and Winchester rifles would go on to see service with a number of militaries including Turkey, switzerland and Italy adopted similar designs. The first magazine-fed firearm to achieve success was the Spencer repeating rifle. The Spencer used a magazine located in the butt of the gun instead of under the barrel. The Spencer was successful, but the rimfire ammunition did occasionally ignite in the magazine tube and it could also injure the user. The new bolt-action rifles began to favor with militaries in the 1880s and were often equipped with tubular magazines. The Mauser Model 1871 was originally a single-shot action that added a magazine in its 1884 update
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STANAG magazine
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A STANAG magazine or NATO magazine is a type of detachable firearm magazine proposed by NATO in October 1980. The U. S. M16 rifle magazine was proposed for standardization, many NATO members, but not all, subsequently developed or purchased rifles with the ability to accept this type of magazine. However the standard was never ratified, in due to German and French work on proprietary magazines respectively for the Heckler & Koch G11 and FAMAS. The STANAG magazine concept is only an interface, dimensional and controls requirement, therefore, it not only allows one type of magazine to interface with various weapon systems, but also allows STANAG magazines to be made in various configurations and capacities. The standard capacities of STANAG-compatible magazines are 20 or 30 rounds of 5. 56×45mm NATO ammunition, there are also 5-, 10-, 40- and 50-round box magazines, as well as 60- and 100-round casket magazines, 90-round snail-drum magazines, and 100-round drum magazines. There has also been a 150-round drum magazine produced, the STANAG magazine, while relatively compact compared to other types of 5. Because STANAG4179 is only a standard, production quality from manufacturer to manufacturer is not uniform. As a result, in March 2009, the U. S. military began to accept delivery of improved STANAG magazines, to increase reliability, these magazines incorporate heavier, more corrosion resistant springs and new tan-colored anti-tilt followers. In addition, many commercial magazine manufacturers now offer improved STANAG-compatible magazines and these magazines are made from high-grade stainless steel bodies, rust- and set-resistant chrome-silicon springs, and anti-tilt followers. There are also highly reliable polymer magazines, some with view windows, ARDEC began development of a new magazine design in July 2013 to address feeding issues of older designs with the new M855A1 Enhanced Performance Round. It was first made public in 2014 and completed development in mid-2016 as the Enhanced Performance Magazine, the RAM-LINE 30-round COMBO MAG is a uniquely notable STANAG magazine. These commercial translucent plastic magazines can be used in both AR-15 type rifles and Ruger Mini-14 type rifles
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Iron sights
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Iron sights are typically composed of two component sights, formed by metal blades, a rear sight mounted perpendicular to the line of sight and a front sight that is a post, bead, or ring. Open sights use a notch of some sort as the rear sight, civilian, hunting, and police firearms usually feature open sights, while many military battle rifles employ aperture sights. The earliest and simplest iron sights are fixed and cannot be easily adjusted, many iron sights are designed to be adjustable, so that the sights can be adjusted for elevation or windage. On many firearms it is the sight that is adjustable. For precision applications such as hunting or sniping, the sights are usually replaced by a telescopic sight. Iron sights may still be fitted alongside other sighting devices for back-up usage, iron sights provide horizontal and vertical reference points that allow the shooter to train the weapon. Rear sights are mounted in a dovetail on the barrel or receiver, closer to the eye of the shooter. Front sights are mounted to the barrel by dovetailing, soldering, screwing, or staking close to the muzzle, frequently on a ramp. Some front sight assemblies include a detachable hood intended to reduce glare, with typical blade or post iron sights, the shooter would center the front post in the notch of the rear sight and the tops of both sights should be level. Since the eye is capable of focusing on one plane, and the rear sight, front sight. At 1,000 m, that same misalignment would be magnified 100 times, sights for shotguns used for shooting small, moving targets work quite differently. The rear sight is completely discarded, and the reference point is provided by the correct. A brightly colored round bead is placed at the end of the barrel, often, this bead will be placed along a raised, flat rib, which is usually ventilated to keep it cool and reduce mirage effects from a hot barrel. This method of aiming is not as precise as that of a front sight/rear sight combination, but it is faster. Some shotguns also provide a mid-bead, which is a smaller bead located halfway down the rib, open sights generally are used where the rear sight is at significant distance from the shooters eye. They provide minimum occlusion of the view, but at the expense of precision. Open sights generally use either a square post or a bead on a post for a front sight, to use the sight, the post or bead is positioned both vertically and horizontally in the center of the rear sight notch. For a center hold, the front sight is positioned on the center of the target, for a 6oclock hold, the front sight is positioned just below the target and centered horizontally
20.
M16A2 rifle
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The M16 rifle, officially designated Rifle, Caliber 5.56 mm, M16, is a United States military adaptation of the Armalite AR-15 rifle. The original M16 was a select-fire,5. 56×45mm rifle with a 20-round magazine, in 1964, the M16 entered American military service and the following year was deployed for jungle warfare operations during the Vietnam War. In 1969, the M16A1 replaced the M14 rifle to become the U. S. militarys standard service rifle, the M16A1 improvements include a bolt-assist, chrome plated bore and a new 30-round magazine. In 1983, the USMC adopted the M16A2 rifle and the U. S. Army adopted it in 1986, the M16A2 fires the improved 5. Adopted in 1998, the M16A4 is the generation of the M16 series. It is equipped with a carrying handle and Picatinny rail for mounting optics. The M16 has also widely adopted by other militaries around the world. Total worldwide production of M16s has been approximately 8 million, making it the most-produced firearm of its 5.56 mm caliber. The U. S. Army has largely replaced the M16 in combat units with the shorter and lighter M4 carbine, however, early experiments with select-fire versions of the M1 Garand proved disappointing. During the Korean War, the select-fire M2 carbine largely replaced the gun in US service. However, combat experience suggested that the.30 Carbine round was under-powered, American weapons designers concluded that an intermediate round was necessary, and recommended a small-caliber, high-velocity cartridge. This culminated in the development of the 7. 62×51mm NATO cartridge, the US also adopted the M60 general purpose machine gun. Its NATO partners adopted the FN FAL and HK G3 rifles, as well as the FN MAG, the first confrontations between the AK-47 and the M14 came in the early part of the Vietnam War. Battlefield reports indicated that the M14 was uncontrollable in full-auto and that soldiers could not carry enough ammo to maintain fire superiority over the AK-47, and, while the M2 carbine offered a high rate of fire, it was under-powered and ultimately outclassed by the AK-47. A replacement was needed, a medium between the traditional preference for high-powered rifles such as the M14, and the firepower of the M2 Carbine. As a result, the Army was forced to reconsider a 1957 request by General Willard G. Wyman, continental Army Command to develop a.223 caliber select-fire rifle weighing 6 lb when loaded with a 20-round magazine. This request ultimately resulted in the development of a version of the Armalite AR-10. However, despite overwhelming evidence that the AR-15 could bring more firepower to bear than the M14, in January 1963, Secretary of Defense Robert McNamara concluded that the AR-15 was the superior weapon system and ordered a halt to M14 production
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Assault rifle
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An assault rifle is a selective-fire rifle that uses an intermediate cartridge and a detachable magazine. Assault rifles were first used during World War II, examples include the StG44, AK-47 and the M16 rifle. However, other sources dispute that Hitler had much to do with coining the new name besides signing the production order, the StG44 is generally considered the first selective fire military rifle to popularize the assault rifle concept. Today, the assault rifle is used to define firearms sharing the same basic characteristics as the StG44. The U. S. Army defines assault rifles as short, compact, in a strict definition, a firearm must have at least the following characteristics to be considered an assault rifle, It must be capable of selective fire. It must have a cartridge, more power than a pistol. Its ammunition must be supplied from a box magazine. It must have a range of at least 300 metres. Rifles that meet most of these criteria, but not all, are not assault rifles. For example, Select-fire M2 Carbines are not assault rifles, their range is only 200 yards. Select-fire rifles such as the FN FAL battle rifle are not assault rifles, semi-automatic-only rifles like variants of the Colt AR-15 are not assault rifles, they do not have select-fire capabilities. Semi-auto rifles with fixed magazines like the SKS are not assault rifles, selective fire rifles like the Fedorov Avtomat which in hindsight could be classified as prototypical assault rifles. However,6. 5x50mm Arisaka is still very much a full-powered rifle cartridge and they would soon develop a select-fire intermediate powered rifle combining the firepower of a submachine gun with the range and accuracy of a rifle. The result was the Sturmgewehr 44, which the Germans produced in large numbers and it fired a new and revolutionary intermediate powered cartridge, the 7. 92×33mm Kurz. This new cartridge was developed by shortening the standard 7. 92×57mm Mauser round and giving it a lighter 125-grain bullet, a smaller lighter cartridge also allowed soldiers to carry more ammunition to support the higher consumption rate of automatic fire. The Sturmgewehr 44 features an inexpensive, easy-to-make, stamped steel design and this weapon was the prototype of all successful automatic rifles. The barrel and overall length were shorter than a traditional rifle, on July 15,1943, a Sturmgewehr was demonstrated before the Peoples Commissariat of Arms of the USSR. The Soviets soon developed the 7. 62×39mm M43 cartridge, the semi-automatic SKS carbine, shortly after World War II, the Soviets developed the AK-47 assault rifle, which would quickly replace the SKS in Soviet service
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United States Armed Forces
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The United States Armed Forces are the federal armed forces of the United States. They consist of the Army, Marine Corps, Navy, Air Force, from the time of its inception, the military played a decisive role in the history of the United States. A sense of unity and identity was forged as a result of victory in the First Barbary War. Even so, the Founders were suspicious of a permanent military force and it played an important role in the American Civil War, where leading generals on both sides were picked from members of the United States military. Not until the outbreak of World War II did a standing army become officially established. The National Security Act of 1947, adopted following World War II and during the Cold Wars onset, the U. S. military is one of the largest militaries in terms of number of personnel. It draws its personnel from a pool of paid volunteers. As of 2016, the United States spends about $580.3 billion annually to fund its military forces, put together, the United States constitutes roughly 40 percent of the worlds military expenditures. For the period 2010–14, the Stockholm International Peace Research Institute found that the United States was the worlds largest exporter of major arms, the United States was also the worlds eighth largest importer of major weapons for the same period. The history of the U. S. military dates to 1775 and these forces demobilized in 1784 after the Treaty of Paris ended the War for Independence. All three services trace their origins to the founding of the Continental Army, the Continental Navy, the United States President is the U. S. militarys commander-in-chief. Rising tensions at various times with Britain and France and the ensuing Quasi-War and War of 1812 quickened the development of the U. S. Navy, the reserve branches formed a military strategic reserve during the Cold War, to be called into service in case of war. Time magazines Mark Thompson has suggested that with the War on Terror, Command over the armed forces is established in the United States Constitution. The sole power of command is vested in the President by Article II as Commander-in-Chief, the Constitution also allows for the creation of executive Departments headed principal officers whose opinion the President can require. This allowance in the Constitution formed the basis for creation of the Department of Defense in 1947 by the National Security Act, the Defense Department is headed by the Secretary of Defense, who is a civilian and member of the Cabinet. The Defense Secretary is second in the chain of command, just below the President. Together, the President and the Secretary of Defense comprise the National Command Authority, to coordinate military strategy with political affairs, the President has a National Security Council headed by the National Security Advisor. The collective body has only power to the President
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United States Army
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The United States Army is the largest branch of the United States Armed Forces and performs land-based military operations. After the Revolutionary War, the Congress of the Confederation created the United States Army on 3 June 1784, the United States Army considers itself descended from the Continental Army, and dates its institutional inception from the origin of that armed force in 1775. As a uniformed service, the Army is part of the Department of the Army. As a branch of the forces, the mission of the U. S. The branch participates in conflicts worldwide and is the major ground-based offensive and defensive force of the United States, the United States Army serves as the land-based branch of the U. S. Section 3062 of Title 10, U. S, the army was initially led by men who had served in the British Army or colonial militias and who brought much of British military heritage with them. As the Revolutionary War progressed, French aid, resources, a number of European soldiers came on their own to help, such as Friedrich Wilhelm von Steuben, who taught Prussian Army tactics and organizational skills. The army fought numerous pitched battles and in the South in 1780–81 sometimes used the Fabian strategy and hit-and-run tactics, hitting where the British were weakest, to wear down their forces. Washington led victories against the British at Trenton and Princeton, but lost a series of battles in the New York and New Jersey campaign in 1776, with a decisive victory at Yorktown, and the help of the French, the Continental Army prevailed against the British. After the war, though, the Continental Army was quickly given land certificates, State militias became the new nations sole ground army, with the exception of a regiment to guard the Western Frontier and one battery of artillery guarding West Points arsenal. However, because of continuing conflict with Native Americans, it was realized that it was necessary to field a trained standing army. The War of 1812, the second and last war between the United States and Great Britain, had mixed results. After taking control of Lake Erie in 1813, the U. S. Army seized parts of western Upper Canada, burned York and defeated Tecumseh, which caused his Western Confederacy to collapse. Following U. S. victories in the Canadian province of Upper Canada, British troops, were able to capture and burn Washington, which was defended by militia, in 1814. Two weeks after a treaty was signed, Andrew Jackson defeated the British in the Battle of New Orleans and Siege of Fort St. Philip, U. S. troops and sailors captured HMS Cyane, Levant, and Penguin in the final engagements of the war. Per the treaty, both sides, the United States and Great Britain, returned to the status quo. Both navies kept the warships they had seized during the conflict, the armys major campaign against the Indians was fought in Florida against Seminoles. It took long wars to defeat the Seminoles and move them to Oklahoma
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United States Marine Corps
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The U. S. Marine Corps is one of the four armed service branches in the U. S. Department of Defense and one of the seven uniformed services of the United States. The current Chairman of the Joint Chiefs of Staff, the military officer in the U. S. Armed Forces, is a Marine Corps general, the Marine Corps has been a component of the U. S. Department of the Navy since 30 June 1834, working closely with naval forces for training, transportation, and logistics. The USMC operates posts on land and aboard sea-going amphibious warfare ships around the world, two battalions of Continental Marines were formed on 10 November 1775 in Philadelphia as a service branch of infantry troops capable of fighting for independence both at sea and on shore. The role of the Corps has since grown and evolved, expanding to aerial warfare and earning popular titles such as, Americas third air force, and, second land army. By the mid-20th century, the U. S. Marine Corps had become a major theorist of and its ability to rapidly respond on short notice to expeditionary crises gives it a strong role in the implementation and execution of American foreign policy. As of 2016, the USMC has around 182,000 active duty members and it is the smallest of the U. S. The USMC serves as an expeditionary force-in-readiness and this last clause, while seemingly redundant given the Presidents position as Commander-in-chief, is a codification of the expeditionary responsibilities of the Marine Corps. It derives from similar language in the Congressional acts For the Better Organization of the Marine Corps of 1834, in 1951, the House of Representatives Armed Services Committee called the clause one of the most important statutory – and traditional – functions of the Marine Corps. In addition to its duties, the Marine Corps conducts Visit, Board, Search, and Seizure operations, as well as missions in direct support of the White House. The Marine Band, dubbed the Presidents Own by Thomas Jefferson, Marines from Ceremonial Companies A & B, quartered in Marine Barracks, Washington, D. C. The Executive Flight Detachment also provides transport to Cabinet members. The relationship between the Department of State and the U. S. Marine Corps is nearly as old as the corps itself, for over 200 years, Marines have served at the request of various Secretaries of State. After World War II, an alert, disciplined force was needed to protect American embassies, consulates, in 1947, a proposal was made that the Department of War furnish Marine Corps personnel for Foreign Service guard duty under the provisions of the Foreign Service Act of 1946. A formal Memorandum of Agreement was signed between the Department of State and the Secretary of the Navy on December 15,1948, during the first year of the MSG program,36 detachments were deployed worldwide. Continental Marines manned raiding parties, both at sea and ashore, the Advanced Base Doctrine of the early 20th century codified their combat duties ashore, outlining the use of Marines in the seizure of bases and other duties on land to support naval campaigns. Throughout the late 19th and 20th centuries, Marine detachments served aboard Navy cruisers, battleships, Marine detachments served in their traditional duties as a ships landing force, manning the ships weapons and providing shipboard security. Marines would develop tactics and techniques of amphibious assault on defended coastlines in time for use in World War II, during World War II, Marines continued to serve on capital ships
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Infantry
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Infantry is the general branch of an army that engages in military combat on foot. As the troops who engage with the enemy in close-ranged combat, infantry units bear the largest brunt of warfare, Infantry can enter and maneuver in terrain that is inaccessible to military vehicles and employ crew-served infantry weapons that provide greater and more sustained firepower. In English, the 16th-century term Infantry describes soldiers who walk to the battlefield, and there engage, fight, the term arose in Sixteenth-Century Spain, which boasted one of the first professional standing armies seen in Europe since the days of Rome. It was common to appoint royal princes to military commands, and the men under them became known as Infanteria. in the Canadian Army, the role of the infantry is to close with, and destroy the enemy. In the U. S. Army, the closes with the enemy, by means of fire and maneuver, in order to destroy or capture him, or to repel his assault by fire, close combat. In the U. S. Marine Corps, the role of the infantry is to locate, close with, and destroy the enemy fire and maneuver. Beginning with the Napoleonic Wars of the early 19th century, artillery has become a dominant force on the battlefield. Since World War I, combat aircraft and armoured vehicles have become dominant. In 20th and 21st century warfare, infantry functions most effectively as part of a combined arms team including artillery, armour, Infantry relies on organized formations to be employed in battle. These have evolved over time, but remain a key element to effective infantry development and deployment, until the end of the 19th century, infantry units were for the most part employed in close formations up until contact with the enemy. This allowed commanders to control of the unit, especially while maneuvering. The development of guns and other weapons with increased firepower forced infantry units to disperse in order to make them less vulnerable to such weapons. This decentralization of command was made possible by improved communications equipment, among the various subtypes of infantry is Medium infantry. This refers to infantry which are heavily armed and armored than heavy infantry. In the early period, medium infantry were largely eliminated due to discontinued use of body armour up until the 20th century. In the United States Army, Stryker Infantry is considered Medium Infantry, since they are heavier than light infantry, Infantry doctrine is the concise expression of how infantry forces contribute to campaigns, major operations, battles, and engagements. It is a guide to action, not a set of hard, doctrine provides a very common frame of reference across the military forces, allowing the infantry to function cooperatively in what are now called combined arms operations. Doctrine helps standardise operations, facilitating readiness by establishing common ways of accomplishing infantry tasks, doctrine links theory, history, experimentation, and practice
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M203 grenade launcher
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The M203 is a single-shot 40 mm under-barrel grenade launcher designed to attach to a rifle. It uses the same rounds as the older stand-alone M79 break-action grenade launcher, quite versatile, and compatible with many rifle models, the M203 was originally designed for the U. S. M16 and its variant, the M4 Carbine. The launcher can also be mounted onto a C7, a Canadian version of the M16 rifle, however, stand-alone variants of the M203 exist, as do versions designed specifically for many other rifles. The device attaches under the barrel, the trigger being in the rear of the launcher. The rifle magazine functions as a grip when firing the M203. A separate sighting system is added to rifles fitted with the M203, the version fitted to the Canadian C7 has a sight attached to the side of the launcher, either on the left or right depending on the users needs. The M203 was the part of the armys Special Purpose Individual Weapon project to go into production. The M203 has been in service since 1969 and was introduced to U. S. military forces during the early 1970s, replacing the older M79 grenade launcher and the conceptually similar Colt XM148 design. However, while the M79 was a weapon, the M203 was designed as an under-barrel device attached to an existing rifle. A new grenade launcher, the M320, will replace the M203 in the United States Army. The United States Marine Corps, Air Force, Coast Guard, the M320 features an advanced day/night sight, a double-action firing mechanism as well as other benefits, such as an unobstructed side-loading breech. The M203 grenade launcher is intended to be used as fire support against point. Its primary purpose is to enemies in dead space that cannot be reached by direct fire. A well-trained M203 gunner can use his weapon to suppress the enemy, based on movement, in addition, the M203 can be used as a crowd control weapon when equipped with the M651 Tactical CS grenade. Classified as a weapon, the M203 is not intended to be used against armored or heavy vehicles. The M203 is able to fire a variety of different rounds for many purposes, ARMY FIELD MANUAL FM 3-22.31 40-MM GRENADE LAUNCHER, M203, there are 8 different rounds for the M203, High-Explosive. The HEDP round has an olive drab aluminum skirt with a cup attached, white markings. The HE round has an olive drab aluminum skirt with a projectile attached, gold markings
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M320 Grenade Launcher Module
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The M320 uses the same High-Low Propulsion System as the M203. In 2004, the Army announced a requirement for a commercial off-the-shelf 40 mm grenade launcher and it had to be more reliable, ergonomic, accurate, and safer than the M203. It had to be able to fire all 40 mm low-velocity grenades, Heckler & Kochs submission was selected in May 2005. After the U. S. Army at Picatinny Arsenal conducted a competitive bidding process for a new 40 mm grenade launching system, the M320 was developed from but is not identical to the Heckler & Koch AG36. The M320 entered production in November 2008, fielding of the M320 was planned to begin in February 2009, with 71,600 GLMs planned to phase out the M203 by 2015. The weapon was officially fielded in July 2009 at Fort Bragg by the 1st Brigade Combat Team, the M320 has three major parts, a grenade launcher with rifled barrel, Day/Night Sight produced by Insight Technology, Inc and a hand held Laser Range Finder. Some of the benefits are, The M320 can be used in two ways, the Day/Night Sight allows the grenadier to effectively engage the enemy in the dark. The M320 is based on the earlier Heckler & Koch AG-C and it includes a folding foregrip and shorter barrel for a more compact package. The sights had to be reconfigured to shoot accurately with the slightly different ballistics from the barrel length. The system was supposed to be lighter than the M203 and does not require specific mounting hardware, breech loading allows the grenadier to load a shell while keeping the sight on target. It weighs 3.57 lb in its configuration,3.89 lb with the LRF and electronic sight. The LRF helps eliminate range estimation errors common in shots greater than 100 meters, the M320 can fire all NATO high-explosive, smoke, and illumination grenades. The M320 operates in double-action mode, with an ambidextrous safety, in case of misfire, the M320 operator merely has to pull the trigger again. The M203 used a single-action mode, which cocks the weapon as the barrel is opened, the M203 operator has to open the barrel by unlocking it and pushing forward to cock the weapon and then re-close the barrel, then pull the trigger again. The problem with this is that in opening the barrel, the grenade is designed to eject, the weapons introduction was not without criticism. Soldiers complained about switching from the simple, more streamlined M203 to one more sophisticated attachments. Complaints ranged from the grip and sighting system, the pistol grip handle catching on things. The M320 has the ability to fire detached from a rifle, soldiers have reported difficulties carrying it unmounted, as its one-point sling does not hold it securely
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Semi-automatic firearm
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A semi-automatic, or self-loading firearm, is one that performs all steps necessary to prepare it to discharge again after firing—assuming cartridges remain in the firearms feed device. Typically, this includes extracting and ejecting the spent cartridge case from the chamber, re-cocking the firing mechanism. For the other forms, the mechanism would require cycling manually prior to firing the next round. An automatic or a selective-fire firearm set to fire automatically would be able to discharge continuously as long as the trigger is held until the magazine or feed device runs out of ammunition. Obviously, this additional feature complicates the design of the sear and disconnector, the first successful design for a semi-automatic rifle is attributed to German-born gunsmith Ferdinand Ritter von Mannlicher, who unveiled the design in 1885. The Model 85 was followed by the equally innovative Mannlicher Models 91,93 and 95 semi-automatic rifles.5 mm ammunition that were fed into the M1894 by a stripper clip. The Auto-5 relied on long recoil operation, this remained the dominant form in semi-automatic shotguns for approximately 50 years. Production of the Auto-5 was ended in 1999, in 1903 and 1905, the Winchester Repeating Arms Company introduced the first semi-automatic rimfire and centerfire rifles designed especially for the civilian market. The Winchester Model 1903 and Winchester Model 1905 operated on the principle of blowback in order to function semi-automatically, johnson, the Model 1903 achieved commercial success and continued to be manufactured until 1932 when the Winchester Model 63 replaced it. Winchester introduced a medium caliber semi-automatic sporting rifle, the Model 1907 as an upgrade to the Model 1905, utilizing a system of operation. Both the Models of 1905 and 1907 saw limited military and police use, in 1906, Remington Arms introduced the Remington Auto-loading Repeating Rifle. Remington advertised this rifle, renamed the Model 8 in 1911 and this is a locked-breech, long recoil action designed by John Browning. The Model 81 superseded the Model 8 in 1936 and was offered in.300 Savage as well as the original Remington calibers, the first semi-automatic rifle adopted and widely issued by a major military power was the Fusil Automatique Modele 1917. This is a breech, gas-operated action which is very similar in its mechanical principles to the future M1 Garand in the United States. The M1917 was fielded during the stages of WWI but it did not receive a favorable reception. However its shortened and improved version, the Model 1918, gave complete satisfaction during the Moroccan Rif War from 1920 to 1926, the Lebel bolt-action rifle remained the standard French infantry rifle until replaced in 1936 by the MAS-36 despite the various semi-automatic rifles designed between 1918 and 1935. In 1937, the American M1 Garand was the first semi-automatic rifle to replace its nations bolt-action rifle as the infantry weapon. The gas-operated M1 Garand was developed by Canadian-born John Garand for the U. S. government at the Springfield Armory in Springfield, after years of research and testing, the first production model of the M1 Garand was unveiled in 1937
29.
Burst mode (firearm)
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This firing mode is commonly used in submachine guns, assault rifles and carbines. Other types of firearms, such as machine pistols may also have a burst mode, the burst mode is normally employed as an intermediate fire mode between semi-automatic and fully automatic, although some firearms lack a full auto capability and use a burst mode instead. For instance, the M16A4 has, in addition to the mode, a three-round burst mode. The reason for replacement was the massive waste of ammunition. The number of rounds fired in a burst is almost universally determined by a cam mechanism that trips the mechanism for each shot in the burst. Some designs, as employed on the M16 series, will terminate the burst if the trigger is released before the burst is complete, thus, the next time the trigger is pulled, the weapon will only fire one or two rounds. Other designs, such as the mechanism found on Heckler & Koch weapons, thus, the next burst will still fire a full number of rounds. Some firearms, like the AN-94, have hyperburst, a feature in which rounds are fired in quick succession. Selective fire Automatic firearm Bump fire, a technique to simulate full-automatic fire from a semi-automatic firearm
30.
Automatic firearm
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An automatic firearm continuously fires rounds as long as the trigger is pressed or held and there is ammunition in the magazine/chamber. In contrast, a semi-automatic firearm fires one round with each individual trigger-pull, use of this convention can avoid confusion. Firearms are further defined by the type of action used. Self-loading firearms are designed with varying rates of fire due to having different purposes, the speed with which a self-loading firearm can cycle through the functions of, Fire Eject Load Cock is called the cyclic rate. In fully automatic firearms the cyclic rate is tailored to the purpose that the gun is made to serve, anti-aircraft machine guns often have extremely high rates of fire to maximize the probably of a hit. In infantry support weapons these rates of fire are often much lower, the MG34 is a WWII era machinegun which today would be referred to as a General Purpose Machinegun. It came in variations with a cyclic rate as high as 1200 rounds per minute. Firing any firearm generates a high temperature in the firearms barrel. If fired too fast, the components of the firearm will suffer a structural failure and this means that all firearms, regardless of whether they are semi-automatic, fully automatic, or burst mode in their firing methods, will overheat and fail if fired too often. This is especially a problem with fully automatic fire, in actual use, a gun might be able to fire at 1200 rounds per minute, but in one minute it may also overheat and fail. So guns used in a firing mode must not be fired too often. The MG34 is fired manually in bursts of 5 to 7 rounds and it can fire at an effective rate of 150 rounds per minute. Semi-automatic firearms will also overheat if not allowed to cool, a semi-automatic rifle typically has an effective firing rate of 40 rounds per minute. A large part of the reason that this is so low, is that the recoil of firing a round pushes the guns aim off target, the time it takes to reacquire the target slows the effective firing rate. The Army Study Guide lists the rate of fire for an M4 Assault Rifle at 12 to 15 rounds per minute. Automatic firearms can be divided into six categories, Assault rifle The standard type of service rifles in most modern armies. Battle rifle A heavier-caliber type of rifle that some classify as an assault rifle while others see them as a class of their own. Automatic shotgun A type of combat shotgun that is capable of firing shotgun shells automatically, usually also semi-automatically, machine gun A large group of heavier firearms used for automatic fire of rifle ammunition, usually attached to a mount or supported by a bipod
31.
M16 rifle
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The M16 rifle, officially designated Rifle, Caliber 5.56 mm, M16, is a United States military adaptation of the Armalite AR-15 rifle. The original M16 was a select-fire,5. 56×45mm rifle with a 20-round magazine, in 1964, the M16 entered American military service and the following year was deployed for jungle warfare operations during the Vietnam War. In 1969, the M16A1 replaced the M14 rifle to become the U. S. militarys standard service rifle, the M16A1 improvements include a bolt-assist, chrome plated bore and a new 30-round magazine. In 1983, the USMC adopted the M16A2 rifle and the U. S. Army adopted it in 1986, the M16A2 fires the improved 5. Adopted in 1998, the M16A4 is the generation of the M16 series. It is equipped with a carrying handle and Picatinny rail for mounting optics. The M16 has also widely adopted by other militaries around the world. Total worldwide production of M16s has been approximately 8 million, making it the most-produced firearm of its 5.56 mm caliber. The U. S. Army has largely replaced the M16 in combat units with the shorter and lighter M4 carbine, however, early experiments with select-fire versions of the M1 Garand proved disappointing. During the Korean War, the select-fire M2 carbine largely replaced the gun in US service. However, combat experience suggested that the.30 Carbine round was under-powered, American weapons designers concluded that an intermediate round was necessary, and recommended a small-caliber, high-velocity cartridge. This culminated in the development of the 7. 62×51mm NATO cartridge, the US also adopted the M60 general purpose machine gun. Its NATO partners adopted the FN FAL and HK G3 rifles, as well as the FN MAG, the first confrontations between the AK-47 and the M14 came in the early part of the Vietnam War. Battlefield reports indicated that the M14 was uncontrollable in full-auto and that soldiers could not carry enough ammo to maintain fire superiority over the AK-47, and, while the M2 carbine offered a high rate of fire, it was under-powered and ultimately outclassed by the AK-47. A replacement was needed, a medium between the traditional preference for high-powered rifles such as the M14, and the firepower of the M2 Carbine. As a result, the Army was forced to reconsider a 1957 request by General Willard G. Wyman, continental Army Command to develop a.223 caliber select-fire rifle weighing 6 lb when loaded with a 20-round magazine. This request ultimately resulted in the development of a version of the Armalite AR-10. However, despite overwhelming evidence that the AR-15 could bring more firepower to bear than the M14, in January 1963, Secretary of Defense Robert McNamara concluded that the AR-15 was the superior weapon system and ordered a halt to M14 production
32.
CAR-15
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The Colt Automatic Rifle-15 Military Weapons System or CAR-15 was a family of the AR-15 and M16 rifle–based firearms marketed by Colt in the late 1960s and early 1970s. Due to their size, the short-barreled Colt Commando and XM177 versions of this family continued to be issued to the U. S. military after the Vietnam War. The CAR-15 name was an attempt to re-associate the AR-15 name with Colt, since the AR initially stood for ArmaLite Rifle, the original manufacturer of the Armalite AR-15. Colt later abandoned the CAR-15 concept, but continued to make variations, using the M16 brand for military-oriented models, however, in present usage, CAR-15 is used as a generic name for carbine-length M16 and AR-15 variants from before the M4. Specifically, Colt Commando currently refers to the ultrashort 10.5 barrel of the model 609 and 11. 5-inch barrel assault rifle of the Model 733 series. By comparison, the M4 carbine has a 14. 5-inch barrel, following a long series of tests by the U. S. Army and U. S. Air force, resulted in an order for 8,500 AR-15 rifles for the Air Force in 1962. About the same time, the Advanced Research Projects Agency of the Department of Defense became interested, each variation had a Colt model number, meant for internal identification usage. The members of the CAR-15 family, with the exception of the Rifle and Commando, only existed as toolroom prototypes, as a result, wide variation due to experimentation exists within each model. The U. S. military only made significant purchases of the Rifle and Commando versions, the CAR-15 Rifle was already identified by most users as M16s or AR-15s, and the CAR-15 name was similarly associated with the short-barreled Submachine Gun and Commando models. Because of that, the term CAR-15 has been used to describe any M16-based carbine, however, the United States military had already committed to purchases before Colt created the concept of the CAR-15 weapons system. The principal difference between the Model 603 and Model 604 is that the former has a forward assist, allowing a user to close a stuck bolt. The Model 605A CAR-15 Carbine was a version for situations where longer weapons could be unwieldy. The only significant change from the M16 rifle was that the barrel was shortened to 15 inches in length, because of the shorter barrel, no bayonet mounting lugs were provided. One prototype used a shorter handguard and a 16-inch long barrel, the Model 605B had no forward assist, but had a four-position selector switch so that a user could select safe, semi-automatic, three-round burst, or full automatic modes of fire. Unlike the standard group, the four-position group went from safe, fully automatic, semi-automatic. The selector itself had 360 degrees of motion, and could be moved either clockwise or counterclockwise, instead of three-round burst, the burst cam could be modified to two-round or six-round burst. Both versions used the rifle-length buttstock, as early as 1962, United States Navy SEALs were using the CAR-15 Carbine. The Model 606 CAR-15 Heavy Assault Rifles used heavy barrels for sustained automatic fire, like the Browning Automatic Rifle, the CAR-15 HBARs did not have a quick-change barrel
33.
Vietnam War
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It was the second of the Indochina Wars and was officially fought between North Vietnam and the government of South Vietnam. The war is considered a Cold War-era proxy war. As the war continued, the actions of the Viet Cong decreased as the role. U. S. and South Vietnamese forces relied on air superiority and overwhelming firepower to conduct search and destroy operations, involving ground forces, artillery, in the course of the war, the U. S. conducted a large-scale strategic bombing campaign against North Vietnam. The North Vietnamese government and the Viet Cong were fighting to reunify Vietnam and they viewed the conflict as a colonial war and a continuation of the First Indochina War against forces from France and later on the United States. The U. S. government viewed its involvement in the war as a way to prevent a communist takeover of South Vietnam and this was part the domino theory of a wider containment policy, with the stated aim of stopping the spread of communism. Beginning in 1950, American military advisors arrived in what was then French Indochina, U. S. involvement escalated in the early 1960s, with troop levels tripling in 1961 and again in 1962. Regular U. S. combat units were deployed beginning in 1965, despite the Paris Peace Accord, which was signed by all parties in January 1973, the fighting continued. In the U. S. and the Western world, a large anti-Vietnam War movement developed as part of a larger counterculture, the war changed the dynamics between the Eastern and Western Blocs, and altered North–South relations. Direct U. S. military involvement ended on 15 August 1973, the capture of Saigon by the North Vietnamese Army in April 1975 marked the end of the war, and North and South Vietnam were reunified the following year. The war exacted a huge human cost in terms of fatalities, estimates of the number of Vietnamese soldiers and civilians killed vary from 966,000 to 3.8 million. Some 240, 000–300,000 Cambodians,20, 000–62,000 Laotians, and 58,220 U. S. service members died in the conflict. Various names have applied to the conflict. Vietnam War is the most commonly used name in English and it has also been called the Second Indochina War and the Vietnam Conflict. As there have been several conflicts in Indochina, this conflict is known by the names of its primary protagonists to distinguish it from others. In Vietnamese, the war is known as Kháng chiến chống Mỹ. It is also called Chiến tranh Việt Nam, France began its conquest of Indochina in the late 1850s, and completed pacification by 1893. The 1884 Treaty of Huế formed the basis for French colonial rule in Vietnam for the seven decades
34.
GAU-5
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The Colt Automatic Rifle-15 Military Weapons System or CAR-15 was a family of the AR-15 and M16 rifle–based firearms marketed by Colt in the late 1960s and early 1970s. Due to their size, the short-barreled Colt Commando and XM177 versions of this family continued to be issued to the U. S. military after the Vietnam War. The CAR-15 name was an attempt to re-associate the AR-15 name with Colt, since the AR initially stood for ArmaLite Rifle, the original manufacturer of the Armalite AR-15. Colt later abandoned the CAR-15 concept, but continued to make variations, using the M16 brand for military-oriented models, however, in present usage, CAR-15 is used as a generic name for carbine-length M16 and AR-15 variants from before the M4. Specifically, Colt Commando currently refers to the ultrashort 10.5 barrel of the model 609 and 11. 5-inch barrel assault rifle of the Model 733 series. By comparison, the M4 carbine has a 14. 5-inch barrel, following a long series of tests by the U. S. Army and U. S. Air force, resulted in an order for 8,500 AR-15 rifles for the Air Force in 1962. About the same time, the Advanced Research Projects Agency of the Department of Defense became interested, each variation had a Colt model number, meant for internal identification usage. The members of the CAR-15 family, with the exception of the Rifle and Commando, only existed as toolroom prototypes, as a result, wide variation due to experimentation exists within each model. The U. S. military only made significant purchases of the Rifle and Commando versions, the CAR-15 Rifle was already identified by most users as M16s or AR-15s, and the CAR-15 name was similarly associated with the short-barreled Submachine Gun and Commando models. Because of that, the term CAR-15 has been used to describe any M16-based carbine, however, the United States military had already committed to purchases before Colt created the concept of the CAR-15 weapons system. The principal difference between the Model 603 and Model 604 is that the former has a forward assist, allowing a user to close a stuck bolt. The Model 605A CAR-15 Carbine was a version for situations where longer weapons could be unwieldy. The only significant change from the M16 rifle was that the barrel was shortened to 15 inches in length, because of the shorter barrel, no bayonet mounting lugs were provided. One prototype used a shorter handguard and a 16-inch long barrel, the Model 605B had no forward assist, but had a four-position selector switch so that a user could select safe, semi-automatic, three-round burst, or full automatic modes of fire. Unlike the standard group, the four-position group went from safe, fully automatic, semi-automatic. The selector itself had 360 degrees of motion, and could be moved either clockwise or counterclockwise, instead of three-round burst, the burst cam could be modified to two-round or six-round burst. Both versions used the rifle-length buttstock, as early as 1962, United States Navy SEALs were using the CAR-15 Carbine. The Model 606 CAR-15 Heavy Assault Rifles used heavy barrels for sustained automatic fire, like the Browning Automatic Rifle, the CAR-15 HBARs did not have a quick-change barrel
35.
Colt's Manufacturing Company
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Colts Manufacturing Company is an American firearms manufacturer, founded in 1855 by Samuel Colt. It is the corporation to Colts earlier firearms-making efforts, which started in 1836. Colts earliest designs played a role in the popularization of the revolver. Although Samuel Colt did not invent the concept, his designs resulted in the first very successful ones. The most famous Colt products include the Colt Walker, made 1847 in the facilities of Eli Whitney Jr. Though they did not develop it, for a long time Colt was also responsible for all AR-15 and M16 rifle production. The most successful and famous of these are numerous M16 carbines, including the Colt Commando family, in 2002, Colt Defense was split off from Colts Manufacturing Company. Colts Manufacturing Company now serves the market, while Colt Defense serves the law enforcement, military. The two companies remained in the same West Hartford, Connecticut location cross-licensing certain merchandise before reuniting in 2013, following the loss of its M4 contract in 2013, Colt was briefly in Chapter 11 Bankruptcy, starting in 2015. Samuel Colt received a British patent on his design for a revolver in 1835. That same year, he founded his first corporation for its manufacture, the first firearm manufactured at the new Paterson plant, however, was the Colt First Model Ring Lever rifle beginning in 1837. This was followed thereafter in late 1837 by the introduction of the Colt Paterson. This corporation suffered quality problems in production, making firearms with interchangeable parts was still rather new, and it was not yet easy to replicate across different factories. Interchangeability was not complete in the Paterson works, and traditional gunsmithing techniques did not fill the gap entirely there, the Colt Paterson revolver found patchy success and failure, some worked well, while others had problems. The United States Marine Corps and United States Army reported quality problems with these earliest Colt revolvers, production had ended at the New Jersey corporation by 1842. Colt made another attempt at revolver production in 1846 and submitted a prototype to the US government, during the Mexican–American War, this prototype was seen by Captain Samuel Hamilton Walker who made some suggestions to Colt about making it in a larger caliber. Having no factory or machinery to produce the pistols, Samuel Colt collaborated with the Whitney armory of Whitneyville and this armory was run by the family of Eli Whitney. Eli Whitney Jr, the son of the patriarch, was the head of the family armory
36.
Rifling
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In firearms, rifling consists of helical grooves in the internal surface of a guns barrel, which impart a spin to a projectile around its long axis. This spin serves to stabilize the projectile, improving its aerodynamic stability. Rifling is often described by its twist rate, which indicates the distance the rifling takes to complete one revolution, such as 1 turn in 10 inches. A shorter distance indicates a faster twist, meaning that for a given velocity the projectile will be rotating at a spin rate. Barrels intended for long, small-diameter bullets, such as the ultra-low-drag, 80-grain 0.223 inch bullets, extremely long projectiles such as flechettes may require high twist rates, these projectiles must be inherently stable, and are often fired from a smoothbore barrel. Muskets were smoothbore, large caliber weapons using ball-shaped ammunition fired at low velocity. Due to the high cost and great difficulty of manufacturing, and the need to load readily from the muzzle. Consequently, on firing the ball bounced off the sides of the barrel when fired, barrel rifling was invented in Augsburg, Germany in 1498. In 1520 August Kotter, an armourer of Nuremberg, Germany improved upon this work, though true rifling dates from the mid-16th century, it did not become commonplace until the nineteenth century. The most successful weapons using rifling with black powder were breech loaders such as the Queen Anne pistol, the grooves most commonly used in modern rifling have fairly sharp edges. More recently, polygonal rifling, a throwback to the earliest types of rifling, has become popular, polygonal barrels tend to have longer service lives because the reduction of the sharp edges of the land reduces erosion of the barrel. Supporters of polygonal rifling also claim higher velocities and greater accuracy, polygonal rifling is currently seen on pistols from CZ, Heckler & Koch, Glock, Tanfoglio, and Kahr Arms, as well as the Desert Eagle. Such guns have achieved significant increases in velocity and range. Examples include the South African G5 and the German PzH2000, gain-twist rifling begins with very little change in the projectiles angular momentum during the first few inches of bullet travel after ignition during the transition from chamber to throat. This enables the bullet to remain undisturbed and trued to the case mouth. After engaging the rifling the bullet is progressively subjected to accelerated angular momentum as burning powder propels it down the barrel. By only gradually increasing the rate, torque is spread along a much longer section of barrel. Gain-twist rifling was used as early as the American Civil War, colt Army and Navy revolvers both employed gain-twist rifling
37.
Submachine gun
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A submachine gun is a magazine-fed, automatic carbine designed to fire pistol cartridges. The term submachine gun was coined by John T. Thompson, the submachine gun was developed during World War I. At its zenith during World War II, millions of SMGs were made, after the war, new SMG designs appeared frequently. However, by the 1980s, SMG usage decreased, today, submachine guns have been largely replaced by assault rifles, which have a greater effective range and are capable of penetrating the helmets and body armor used by modern infantrymen. Carbine-type automatic weapons firing pistol rounds were developed during the stages of World War I by Italy, Germany. Their improved firepower and portability offered an advantage in trench warfare, in 1915, the Italians introduced the Villar-Perosa aircraft machine gun. It fired pistol-caliber 9mm Glisenti ammunition, but was not a true submachine gun and this odd design was then modified into the Beretta OVP carbine-type submachine gun, which then evolved into the Beretta Model 1918 after the end of World War I. Both the Beretta OVP and the Model 1918 had a wooden stock, a 25-round top-fed box magazine. The Germans initially used heavier versions of the P08 pistol equipped with a larger-capacity snail-drum magazine, by 1918, Bergmann Waffenfabrik had developed the MP18, the first practical submachine gun. This weapon fired the 9×19mm Parabellum round and used the same 32-round snail-drum magazine as the Luger P-08, the MP18 was used in significant numbers by German stormtroopers employing infiltration tactics, achieving some notable successes in the final year of the war. However, these were not enough to prevent Germanys collapse in November 1918, after World War I, the MP18 would evolve into the MP28/II SMG, which incorporated a simple 32-round box magazine, a semi & full auto selector, and other minor improvements. The Thompson submachine gun had been in development at approximately the time as the Bergmann. However, the war ended before prototypes could be shipped to Europe, although it had missed its chance to be the first purpose-designed submachine gun to enter service, it became the basis for later weapons and had the longest active service life of the three. However, the FBI and other U. S. police forces themselves showed no reluctance to use, eventually, the submachine gun was gradually accepted by many military organizations, especially as World War II loomed, with many countries developing their own designs. The Italians were among the first to develop submachine guns during World War I, however, they were slow to produce them during World War II. The Beretta Model 1938 was not available in numbers until 1943. The 38 was made in a series of improved and simplified models all sharing the same basic layout. The Beretta has two triggers, the front for semi-auto and rear for full-auto, most models use standard wooden stocks, although some models were fitted with an MP 40-style under-folding stock and are commonly mistaken for the German SMG
38.
Stopping power
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Stopping power is the ability of a firearm or other weapon to cause enough ballistic trauma to a target to immediately incapacitate the target. This contrasts with lethality in that stopping power only to a weapons ability to incapacitate quickly. Stopping power is related to the properties of the bullet. Critics contend that the importance of one-shot stop statistics is overstated, pointing out that most gun encounters do not involve a shoot once and see how the target reacts situation. Stopping power is caused not by the force of the bullet but by the damaging effects of the bullet, which are typically a loss of blood. This is why in many instances a single wound, with slow blood loss. More immediate effects can result when a bullet damages parts of the nervous system, such as the spine or brain. The importance of hydrostatic shock and of transfer in determining stopping power has long been controversial among gun users. Some have ascribed great importance to hydrostatic shock, some have tried to entirely discount it, in response to addressing stopping power issues, the Mozambique Drill was developed to maximize the likelihood of a targets quick incapacitation. Manstopper is a term used to refer to any combination of firearm and ammunition that can reliably incapacitate, or stop. For example, the.45 ACP pistol round and the.357 Magnum revolver round both have firm reputations as manstoppers, historically, one type of ammunition has had the specific tradename Manstopper. Officially known as the Mk III cartridge, these were made to suit the British Webley.455 service revolver in the early 20th century, the ammunition used a 220-grain cylindrical bullet with hemispherical depressions at both ends. The front acted as a hollow point deforming on impact while the base opened to seal the round in the barrel, some sporting arms are also referred to as stoppers or stopping rifles. These powerful arms are used by game hunters for stopping a suddenly charging animal. The concept of stopping power appeared in the 19th Century when colonial troops at close quarters found that their pistols were not able to stop charging native tribesmen and this led to the introduction or reintroduction of larger caliber weapons capable of stopping opponents with a single round. During the Seymour Expedition in China, at one of the battles at Langfang, Chinese Boxers, armed with swords and spears, charged the British and Americans, who were armed with guns. At point-blank range, one British soldier had to fire four.303 Lee-Metford bullets into a Boxer before he ceased to be a threat, the American Captain Bowman McCalla reported that single rifle shots were not enough, multiple rifle shots were needed to halt a Boxer. Only machine guns were effective in stopping the Boxers
39.
Officer (armed forces)
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An officer is a member of an armed force or uniformed service who holds a position of authority. In this sense, officers are not enlisted, but hold appointments from their government that typically remain in force indefinitely unless resigned, the proportion of officers varies greatly. Officers typically make up between an eighth and a fifth of modern armed forces personnel, in 2013, officers were the senior 17% of the British armed forces, and the senior 13. 7% of the French armed forces. In 2012, officers made up about 18% of the German armed forces, historically, however, armed forces have generally had much lower proportions of officers. During the First World War, fewer than 5% of British soldiers were officers, in the early twentieth century, the Spanish army had the highest proportion of officers of any European army, at 12. 5%. Within a nations armed forces, armies tend to have a proportion of officers. For example,13. 9% of British army personnel and 22. 2% of the RAF personnel were officers in 2013, having officers is one requirement for combatant status under the laws of war, though these officers need not have obtained an official commission or warrant. Commissioned officers are typically the only persons, in an armed forces environment, a superior officer is an officer with a higher rank than another officer, who is a subordinate officer relative to the superior. Non-commissioned officers in positions of authority can be said to have control or charge rather than command per se, many advanced militaries require university degrees as a prerequisite for commissioning, even from the enlisted ranks. In the Israel Defense Forces, a university degree is a requirement for an officer to advance to the rank of lieutenant colonel, the IDF often sponsors the studies for its majors, while aircrew and naval officers obtain academic degrees as a part of their training programmes. In the United Kingdom, there are three routes of entry for British Armed Forces officers, the first, and primary route are those who receive their commission directly into the officer grades following completion at their relevant military academy. The third route is similar to the second, in that they convert from an enlisted to a commission, but these are taken from the highest ranks of SNCOs. LE officers, whilst holding the same Queens Commission, generally work in different roles from the DE officers, in the infantry, a number of Warrant Officer Class 1s are commissioned as LE officers. For Royal Navy and Royal Air Force officer candidates, a 30-week period at Britannia Royal Naval College or a 30-week period at RAF College Cranwell, Royal Marines officers receive their training in the Command Wing of the Commando Training Centre Royal Marines during a grueling 15-month course. The courses consist of not only tactical and combat training, but also leadership, management, etiquette, until the Cardwell Reforms of 1871, commissions in the British Army were purchased by officers. The Royal Navy, however, operated on a more meritocratic, or at least socially mobile, AOCS also also included the embedded Aviation Reserve Officer Candidate and Naval Aviation Cadet programs. NAVCADs were personnel who held associates degrees, but lacked bachelors degrees, nAVCADs would complete the entire AOCS program, but would not be commissioned until completion of flight training and receiving their wings. After their initial tour, they would be assigned to a college or university full-time for no more than two years in order to complete their bachelors degree
40.
Lieutenant colonel (United States)
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In the United States Army, U. S. Marine Corps, and U. S. Air Force, a lieutenant colonel is a field grade military officer rank just above the rank of major and just below the rank of colonel. It is equivalent to the rank of commander in the other uniformed services. The pay grade for the rank of lieutenant colonel is O-5, in the United States armed forces, the insignia for the rank consists of a silver oak leaf, with slight stylized differences between the Army/Air Force version and the Navy/Marine Corps version. While often written as Lt. Colonel in orders and signature blocks, as a courtesy, lieutenant colonels are addressed simply as colonel verbally, the U. S. Army uses the three letter abbreviation LTC. The United States Marine Corps and U. S. Air Force use the abbreviations LtCol and Lt Col respectively. The U. S. Government Printing Office recommends the abbreviation LTC for U. S. Army usage, LtCol for Marine Corps usage, the Associated Press Stylebook recommends the abbreviation Lt. Col. for the Army, Marine Corps, and Air Force. Slang terms for the historically used by the U. S. military include light colonel, short colonel, light bird, half colonel, bottlecap colonel. The rank of lieutenant colonel has existed in the British Army since at least the 16th century and was used in both American colonial militia and colonial regular regiments. The Continental Army continued the British and colonial use of the rank of lieutenant colonel, the lieutenant colonel was sometimes known as lieutenant to the colonel. In British practice, regiments were commanded by their lieutenant colonels. The conversion was never completely effected and some regiments remained commanded by colonels throughout the war, from 1784 until 1791, there was only one lieutenant colonel in the US Army, who acted as the armys commanding officer. In the Continental Army aides to the Commander in Chief, viz, Lieutenant General George Washington, were lieutenant colonels. Additionally, certain officers serving under the Adjutant General, Inspector General, such was the case of Joshua Lawrence Chamberlain, who commanded a Maine regiment as both a lieutenant colonel and later as a colonel. Such was the case with George A. Custer, who was a lieutenant colonel in the regular army, a lieutenant colonel may also serve as a brigade/brigade combat team, regiment/regimental combat team, Marine Aviation Group, Marine Expeditionary Unit, or battalion task force executive officer. These staff positions may include, G-1, G-2, G-3, G-4, G-5, usage of The G-n may refer to either a specific staff section or the staff officer leading a section. Lieutenant colonels may also be junior staff at a variety of higher echelons, Lieutenant colonels may also serve on general staffs and may be the heads of some wing staff departments. Senior Lieutenant colonels occasionally serve as group commanders, in US Army and Air Force ROTC detachments, the commanding officer is typically a lieutenant colonel, along with several majors, captains, and non-commissioned officers serving as assistants. However, some detachments are commanded by full colonels, the rank of lieutenant colonel is also used by many large American police departments for officers in senior administrative positions
41.
Non-commissioned officer
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A non-commissioned officer or noncommissioned officer is a military officer who has not earned a commission. Such is also called sub-officer in some countries, Non-commissioned officers, in the English-speaking world, usually obtain their position of authority by promotion through the enlisted ranks. In contrast, commissioned officers hold higher ranks than NCOs, have more legal responsibilities, are paid more, commissioned officers usually earn their commissions without having risen through the enlisted ranks. Mustang is a term in the United States Armed Forces used to refer to a commissioned officer who began his or her career as an enlisted service member. The NCO corps usually includes all grades of corporal and sergeant, in some countries, the naval equivalent includes some or all grades of petty officer, although not all navies class their petty officers as NCOs. There are different classes of non-commissioned officer, including junior non-commissioned officers, the non-commissioned officer corps is often referred to as the backbone of the armed services, as they are the primary and most visible leaders for most military personnel. Additionally, they are the leaders responsible for executing a military organizations mission. NCO training and education typically includes leadership and management as well as service-specific, senior NCOs are considered the primary link between enlisted personnel and the commissioned officers in a military organization. Their advice and guidance is important for junior officers, who begin their careers in a position of authority. In the Australian Army, Lance corporals and corporals are classified as junior NCOs, while sergeants, in the New South Wales Police Force, NCOs perform supervisory and coordination roles. The ranks of probationary constable through to leading senior constable are referred to as constables, all NCOs within the NSW Police are given a warrant of appointment under the Commissioners hand and seal. All officers within the Australian Defence Force Cadets are non-commissioned, ADFC officers are appointed by the Director-General of their respective branch. In the Canadian Forces, the Queens Regulations and Orders formally defined a non-commissioned officer as A Canadian Forces member holding the rank of Sergeant or Corporal. In the 1990s, the term non-commissioned member was introduced to all ranks in the Canadian Forces from recruit to chief warrant officer. In the Royal Canadian Navy, however, the definition of NCO reflects the international use of the term. Junior Non-commissioned officers mess and billet with privates and seamen, their mess is usually referred to as the junior ranks mess, as a group, NCOs rank above privates and below warrant officers. The term non-commissioned members includes these ranks, in the Finnish Defence Force, NCOs includes all ranks from corporal to sergeant major. Ranks of lance corporal and leading seaman are considered not to be NCO ranks and this ruling applies to all branches of service and also to the troops of the Border Guard
42.
Beretta M9
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The Beretta M9, officially the Pistol, Semiautomatic, 9mm, M9, is a 9×19mm Parabellum pistol adopted by the United States Armed Forces in 1985. It is essentially a military specification Beretta 92FS, the M9 won a competition in the 1980s to replace the M1911A1 as the primary sidearm of the U. S. military, beating many other contenders, and only narrowly defeating the SIG P226 for cost reasons. It officially entered service in 1990, some other models have been adopted to a lesser extent, namely the M11 pistol, and other models remain in use in certain niches. The M9 was scheduled to be replaced under a United States Army program, the Future Handgun System, the JCP was renamed Combat Pistol, and the number of pistols to be bought was drastically cut back. The U. S. Army and Air Force are seeking to replace their M9s through the Modular Handgun System program, in the 1970s every branch of the U. S. Armed Forces except the U. S. Air Force carried the.45 ACP M1911 pistol, the Department of Defense then decided to synchronize the weapons of all five branches of U. S. forces. In 1980, the Beretta 92S-1 design was chosen over entries from Colt, Smith & Wesson, Walther, the Star M28, the result, however, was challenged by the US Army, and new tests were done by the Army. In 1984, the trials started again with updated entries from Smith & Wesson, Beretta, SIG Sauer, Heckler & Koch, Walther, Steyr, Beretta won this competition, but there was a new trial, the XM10 competition, in 1988. This resulted in two different trials that were limited but resulted in the Beretta being chosen, albeit with an updated design. This holster – designed by John Bianchi and Richard Nichols – has served the U. S, Armed Forces well for decades designated the M12, was adopted simultaneously with the adoption of the Beretta 92F in 1985. The Beretta 92F survived exposure to temperatures from −40 to 140 °F, being soaked in water, being dropped repeatedly on concrete. Additionally, the 92F proved a MRBF of 35,000 rounds and that number is often touted as the equivalent to five or six times the pistols service life. While this is true in European militaries, armed forces of the United States normally subject sidearms to much more extensive use. The Iraq War, which featured frequent urban and room-to-room combat, has required American soldiers to more heavily on their pistols. The M9 is used with the Bianchi M12 Holster, though other holsters are often used, the specific modifications made from the Beretta 92 includes, Design of all the parts to make them 100% interchangeable to simplify maintenance for large government organizations. Modified the front of the guard so that one could use finger support for easier aiming. Recurved the forward base of the grip to aid aiming, hard chromed the barrel bore to protect it from corrosion and to reduce wear. New surface coating on the slide called Bruniton, which provides better corrosion resistance than the previous plain blued finish
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Afghanistan: Used only by Afghan Army commandos.[65][66] M4s sold as part of a 2006 Foreign Military Sales package.[67] Additional M4s sold as a 2008 Foreign Military Sales package.[68]
Albania: Used by Albanian Land Force 2015.[69]
Antigua and Barbuda: M4/M4A1s announced to be sold via FMS program in 2017.[70]
Australia: Used by the Special Operations Command, Clearance Divers.[71]
Bolivia[citation needed]
Bosnia & Herzegovina: M4A1s used by the military and air guard units.[68]
Bangladesh: Used by Bangladesh Army Paracommandos, Dhaka Metropolitan Police SWAT teams and Special Warfare Diving And Salvage.[72][73]
Bahrain: M4A1s sold as a 2008 Foreign Military Sales package.[68] More M4/M4A1s announced to be sold via FMS program in 2017.[70]
Belize: M4s/M4A1s sold as part of a 2006 Foreign Military Sales package.[67] More M4/M4A1s announced to be sold via FMS program in 2017.[70]
Brazil: Used by Military Police of Rio de Janeiro State,[74] the Brazilian Federal Police and Special Forces of the Brazilian Army and Brazilian Navy.[75]
Canada: Used by various police units.[76] License made copies continue to be developed by Colt Canada, a successor to DIEMACO, and are known collectively as the C8 carbine.
Croatia: User since 2003, several hundred purchased for Croatian ISF contingent as well as special forces in Croatia.[77]
Czech Republic: Bushmaster M4A3 B.M.A.S. is used by (601st Special forces group, Military police, 43rd Airborne mechanized battalion) of Czech Army.[78]
Colombia: M4A1s as part of a 2008 Foreign Military Sales.[68] More M4/M4A1s announced to be sold via FMS program in 2017.[70]
Ecuador: M4s sold as a 2008 Foreign Military Sales package.[68]
El Salvador: M4s sold as part of a 2007 Foreign Military Sales package.[79] Additional M4s sold as a 2008 Foreign Military Sales package.[68]
Georgia: Bushmaster AR-15 and M4 for police and military. A concept analogue, the G13 carbine was developed by the Scientific Technical Center Delta in 2012.[80][81][82] More M4/M4A1s announced to be sold via FMS program in 2017.[70]
Ghana[83][84][85]
Greece: Used by EKAM, All SF Army, Navy, Airforce units.[86]
Hungary: M4A1 SOPMOD by Hungarian MH 34th Bercsényi László special operation battalion[87] More M4/M4A1s announced to be sold via FMS program in 2017.[70]
India: M4A1s as part of a 2008 Foreign Military Sales.[68] M4A1 is used by the Mizoram Armed Police, PARA, MARCOS, Garud and Force One of the Mumbai Police.[88][89]
Indonesia: Used by Detachment 88 Counter-terrorism Police Squad operators.[90] Also used by Komando Pasukan Katak (Kopaska) tactical diver group and Komando Pasukan Khusus (Kopassus) special forces group.[91]
Iraq: Used by the Iraqi Army.[92] Main weapon of the Iraqi National Counter-Terrorism Force.[93] More M4/M4A1s announced to be sold via FMS program in 2017.[70]
Israel: Sold as part of a January 2001 Foreign Military Sales package to Israel.[94]
Italy: Special Forces[95]
Jamaica: M4s sold as part of a 2007 Foreign Military Sales package.[79]
Japan: M4A1s as part of a 2008 Foreign Military Sales package.[68] M4A1 SOPMOD rifles are in use by the Japanese Special Forces Group.[96]
Jordan: M4s sold as part of a 2007 Foreign Military Sales package.[79] Additional M4s sold as a 2008 Foreign Military Sales package.[68] More M4/M4A1s announced to be sold via FMS program in 2017.[70]
Lebanon: M4 components being sold to Lebanese special forces.[97] M4/M4A1s sold as a 2008 Foreign Military Sales package.[68] More M4/M4A1s announced to be sold via FMS program in 2017.[70]
Liberia: Used by Liberian Emergency Response Unit.[citation needed]
Macedonia: M4s sold as a 2008 Foreign Military Sales package.[68]
Malaysia: Made under license by SME Ordnance Sdn Bhd.[60] Used by military and police special forces,[98]
Nepal: Sold as part of a 2005 Foreign Military Sales package.[99]
New Zealand: Used by NZSAS operators and standard issue to New Zealand Police including Special Tactics Group and Armed Offenders Squad units.[100][101][102]
Pakistan: M4A1 variant used by Special Services Group of the Pakistan Army and special Security Unit of sindh police.[103][104] More M4/M4A1s announced to be sold via FMS program in 2017.[70]
Palestinian Authority: Used by Palestinian security forces.[105]
Panama: M4A1s sold as a 2008 Foreign Military Sales package.[68] More M4/M4A1s announced to be sold via FMS program in 2017.[70]
Philippines: Colt M4/M4A1s sold as a 2008 Foreign Military Sales package.[68] New orders for 63,000 R4A3 rifles from Remington Arms for the Philippine Army and the Philippine Marine Corps.[106][107] Several units also used by the Defense Intelligence and Security Group.[108]
Poland: Used by Wojska Specjalne military unit JW Grom.[109]
Portugal: Used by Marines special forces DAE (Destacamento de Acções Especiais).[110]
Romania: M4/M4A1s announced to be sold via FMS program in 2017.[70]
Russia: Used captured Georgian M4s by the Spetsnaz in the 2008 Russian-Georgian War.[111]
Senegal: M4/M4A1s announced to be sold via FMS program in 2017.[70]
Serbia: Used by various police units.[112]
Singapore: Used by the Singapore Armed Forces Commando Formation.[113]
Slovakia: M4/M4A1s announced to be sold via FMS program in 2017.[70]
Taiwan: Used by Republic of China Army and National Police Agency[114]
Thailand: M4A1s sold as part of a 2006 Foreign Military Sales package.[67]
Tonga: M4/M4A1s sold as a 2008 Foreign Military Sales package.[68]
Turkey: Produced under licence by Sarsılmaz Arms.[61] Used by Turkish Armed Forces[115][unreliable source?]
United Arab Emirates: Purchased 2,500 M4 carbines in 1993.[116]
United States[117]
Yemen: M4s sold as part of a 2006 Foreign Military Sales package.[67]
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