1.
.38 ACP
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The.38 ACP also known as the.38 Auto was introduced at the turn of the 20th century for the John Browning-designed Colt M1900. It was first used in Colts Model 1897 prototype, which he did not produce, the metric designation for the round is 9×23mmSR. Initial loadings of this cartridge were quite powerful, reported ballistics for the first commercial loads were a 130-grain bullet at 1,260 ft/s, and some experimental loads ran as high as 1,350 ft/s. However, these proved too violent for the Colt Model 1900 pistol. Subsequent commercial loadings varied considerably in power, later U. S. commercial loads in this caliber had factory standard ballistics of a 130-grain bullet at 1,040 ft/s from the 4. 5-inch barrel of the Colt 1903 Pocket Model. With Army Ordnance favoring a return to a.45 caliber sidearm by the time the Colt autos in.38 ACP were introduced, the caliber never gained much popularity. However, they did see small but steady sales up until the introduction of the more powerful.38 Super, sales of.38 ACP was semi-rimmed and slightly shorter than the rimless 9 mm Largo. Some Astra 400 pistols were stamped 9M/M&38 on the barrel, denoting that the barrel was designed to chamber both 9mm Largo and.38 ACP. Europe would eventually favor the 9×19mm Parabellum cartridge, the Luger was ballistically similar to the.38 ACP but utilized a smaller case and higher pressures. Browning himself was not done with 9mm cartridges and would introduce the 9mm Browning Long in 1903. Even though.38 ACP and.38 Super are the size, it is dangerous to use the more powerful.38 Super ammunition in a firearm intended for.38 ACP. In the interest of safety, American ammunition companies always loaded.38 ACP loads in brass cases, while.38 Super ammunition was loaded in nickeled cases
2.
Sellier & Bellot
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Sellier & Bellot is a firearms ammunition manufacturer situated in Vlašim, Czech Republic. It is a subsidiary of the Brazilian company CBC, Sellier & Bellot was founded in August 5,1825 by a German businessman of French origins called Louis Sellier. His family had been royalists who had fled France during the French Revolution, Louis Sellier began manufacturing percussion caps for infantry firearms in a factory in Prague, Bohemia on the request of Francis I, the Emperor of Austria. Sellier was soon joined by his countryman Jean Maria Nicolaus Bellot, Sellier & Bellot products soon established themselves on both European and overseas markets. As early as 1830 the manufacture of caps was in excess of 60 million. 1829 A subsidiary plant in the Schönebeck is founded, together with Floberts rimfire and Lefaucheux‘s pin-primer cartridges, the first centrefire cartridges appear in the production program. In just a few years, the annual output grows to 10 million cartridges, Louis Sellier died and his heirs acquired his share. 1872 Heirs of Louis Sellier convince Jean Bellot to give up management of the company, the factory brings in Czech entrepreneur Martin Hála, who soon transforms the company into a joint-stock company. 1884 Another subsidiary plant is established in Riga, Latvia and this soon covers demand for percussion caps in the whole of Russia and Scandinavia,1893 The first trade mark Sellier & Bellot is listed in Prague. 1895 Hunting cartridge cases, quickly followed by hunting cartridges, are brought into the production program and this program is extended by copper primers for blasting works and ammunition manufacture in Škoda Pilsen. 1914–1918 During World War I the production of ammunition is curbed and total capacity used to manufacture rifle. The Steyr 9 mm cartridge is developed and introduced to production during this period. After the independent state of Czechoslovakia is founded in October 1918, the production of commercial ammunition for competition shooting and hunting purposes is further extended. The Company expands into the Asian and South American markets where Sellier & Bellot‘s infantry cartridges meet with a great success, based on the invention of its managing director Dr. Ing. František Blechta, the Company became the manufacturer of silver azide in the world. Owing to this, the production of industrial detonators increased significantly,1936 The Company´s transfer from Prague to Vlašim lead to further growth. The range of ammunition is extended to forty rifle calibre types, ten pistol. Shot shell manufacture ranges from 12 to 410 calibre types, total output soon increases five times
3.
Pistol
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A pistol is a type of handgun. In some usage, the term refers to a subset of handguns. In other usage, the term is interchangeable with handgun, some handgun experts and dictionaries make a technical distinction that views pistols as a subset of handguns, others use the terms interchangeably. But UK/rest of Commonwealth usage does not always make this distinction, for example, the official designation of the Webley Mk VI revolver was Pistol, Revolver, Webley, No.1 Mk VI. The English word was introduced in ca.1570 from the Middle French pistolet, the etymology of the French word pistolet is disputed. The first suggestion derives the word from Czech píšťala, a type of hand-cannon used in the Hussite Wars during the 1420s, the Czech word was adopted in German as pitschale, pitschole, petsole, and variants. The second suggestion is less likely, the use of the word as a designation of a gun is not documented before 1605 in Italy, long after it was used in French, the Czech word is well documented since the Hussite wars in 1420s. Other suggestions include from Middle High German pischulle or from Middle French pistole, also it is suggested that early pistols were carried by cavalry in holsters hung from the pommel of a horses saddle. The most common types of pistol are the shot. Single shot handguns were mainly seen during the era of flintlock and musket weaponry where the pistol was loaded with a ball and fired by a flint striker. However, as technology improved, so did the single shot pistol, new operating mechanisms were created, and due to this, they are still made today. It is the oldest type of pistol, and is used to hunt wild game. Multi-barreled pistols were common during the time as single shot pistols. As designers looked for ways to increase fire rates, multiple barrels were added to all guns including pistols, one example of a multi-barreled pistol is the Ducks foot pistol, which generally had either four or eight barrels, although some 20th century models had three barrels. Around 1850, pistols such as the Jarre harmonica gun were produced that had a sliding magazine, the sliding magazine contained pinfire cartridges or speedloaders. The magazine needed to be moved manually in many designs, hence distinguishing them from semi-automatic pistols, with the development of the revolver in the 19th century, gunsmiths had finally achieved the goal of a practical capability for delivering multiple loads to one handgun barrel in quick succession. The semi-automatic pistol was the step in the development of the pistol. By avoiding multiple chambers—which need to be individually reloaded—semi-automatic pistols delivered faster rates of fire, an example of a modern blow back action semi-automatic pistol is the HK VP70
4.
John Browning
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He is regarded as one of the most successful firearms designers of the 20th century, in the development of modern automatic and semi-automatic firearms, and is credited with 128 gun patents. He made his first firearm at age 13 in his fathers gun shop, Browning influenced nearly all categories of firearms design. He invented or made significant improvements to single-shot, lever-action, and slide-action, rifles and his most significant contributions were arguably in the area of autoloading firearms. He developed the first autoloading pistols that were reliable and compact by inventing the telescoping bolt, integrating the bolt and barrel shroud into what is known as the pistol slide. Brownings telescoping bolt design is now found on every modern semi-automatic pistol. Browning also made significant contributions to automatic cannon development, some of these arms are still manufactured, often with only minor changes in detail and cosmetics to those assembled by Browning or his licensees. His guns are some of the most copied guns in the world, Browning was a member of The Church of Jesus Christ of Latter-day Saints and served a two-year mission in Georgia beginning on March 28,1887. His father Jonathan Browning, who was among the thousands of Mormon pioneers in the exodus from Nauvoo, Illinois to Utah. John Moses worked in his fathers Ogden shop from the age of seven, where he was taught basic engineering and manufacturing principles, production examples of the Model 1885 Single Shot Rifle caught the attention of the Winchester Repeating Arms Company, who dispatched a representative to evaluate the competition. Winchester bought the design for $8,000 and moved production to their Connecticut factory, Winchester manufactured several popular small arms designed by John M. Browning. For decades in the late 19th Century-early 20th Century, Browning designs and Winchester firearms were synonymous, as was the custom of the time, Brownings earlier designs had been licensed exclusively to Winchester for a single fee payment. With this new product, Browning introduced in his negotiations a continuous royalty fee based upon unit sales, if the new shotgun became highly successful, Browning stood to make substantially more fee income over the prior license fee arrangements. Winchester management was displeased with the change in their relationship. Remington Arms was also approached, however the president of Remington died of an attack as Browning waited to offer them the gun. This forced Browning to look overseas to produce the shotgun, however, Remington would later produce a copy of the Auto-5 as the Model 11 which was used by the US Military and was also sold to the civilian market. The Browning Auto-5 was continuously manufactured as a highly popular throughout the 20th century. This shift marked the end of an era of Winchester-Browning collaboration, John Browning was known as a dedicated and tireless innovator and experimenter who sought breakthrough consumer-oriented features and performance and reliability improvements in small arms designs. He did not retire from his career in his elder years, but dedicated his entire adult life—literally to his last day—to these pursuits
5.
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
6.
Bullet
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The word bullet is a firearm term. A bullet is a projectile expelled from the barrel of a firearm, the term is from Middle French and originated as the diminutive of the word boulle which means small ball. Bullets are made of a variety of materials and they are available singly as they would be used in muzzle loading and cap and ball firearms, as part of a paper cartridge, and much more commonly as a component of metallic cartridges. Bullets are made in a numbers of styles and constructions depending on how they will be used. Many bullets have specialized functions, such as hunting, target shooting, training, defense, a bullet is not a cartridge. In paper and metallic cartridges a bullet is one component of the cartridge, bullet sizes are expressed by their weight and diameter in both English and Metric measurement systems. For example.22 caliber 55 grain bullets or 5. 56mm 55 grain bullets are the same caliber, the word bullet is often used colloquially to refer to a cartridge, which is a combination of the bullet, paper or metallic case/shell, powder, and primer. This use of bullet, when cartridge is intended, leads to confusion when the components of a cartridge are discussed or intended, the bullets used in many cartridges are fired at a muzzle velocity faster than the speed of sound. Meaning they are supersonic and thus can travel a substantial distance, bullet speed through air depends on a number of factors such as barometric pressure, humidity, air temperature, and wind speed. Subsonic cartridges fire bullets slower than the speed of sound and so there is no sonic crack and this means that a subsonic cartridge such as.45 ACP can be effectively suppressed to be substantially quieter than a supersonic cartridge such as the.223 Remington. Bullets do not normally contain explosives, but damage the target by impact. The first use of gunpowder in Europe was recorded in 1247 and it had been used in China for hundreds of years. Later in 1364 hand cannon appeared, early projectiles were made of stone. Stone was used in cannon and hand cannon, in cannon it was eventually found that stone would not penetrate stone fortifications which gave rise to the use of heavier metals for the round projectiles. Hand cannon projectiles developed in a similar following the failure of stone from siege cannon. The first recorded instance of a ball from a hand cannon penetrating armor occurred in 1425. In this photograph of shot retrieved from the wreck of the Mary Rose which was sunk in 1545, the round shot are clearly of different sizes and some are stone while others are cast iron. The development of the hand culverin and matchlock arquebus brought about the use of cast lead balls as projectiles, bullet is derived from the French word boulette, which roughly means little ball
7.
Automatic Colt Pistol
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Automatic Colt Pistol denotes various John Browning cartridge designs primarily used in Colt and Fabrique Nationale de Herstal pistols. All of these cartridges are straight-sided and appear similar, the first was the Colt M1900 made from 1900 to 1902 exclusively for the.38 ACP. The Colt Model 1903 Pocket Hammer was manufactured for the same.38 ACP cartridge from 1902 to 1928, the M1905 military pistol was manufactured for the.45 ACP cartridge from 1905 to 1912. The M1905 was replaced by the military M1911 pistol which remained in production until 1970, the Colt Model 1903 Pocket Hammerless pistol was manufactured for the.32 ACP from 1903 to 1941 and as the Model 1908 for the.380 ACP from 1908 to 1941. The Colt Model 1908 Vest Pocket pistol was manufactured for the.25 ACP from 1908 to 1941, 9mm Browning Long List of handgun cartridges
8.
Rim (firearms)
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A rim is an external flange that is machined, cast, molded, stamped or pressed around the bottom of a firearms cartridge. Thus, rimmed cartridges are sometimes called flanged cartridges, almost all cartridges feature an extractor or headspacing rim, in spite of the fact that some cartridges are known as rimless cartridges. These types are rimmed, rimless, semi-rimmed, rebated rim and these categories describe the size of the rim in relation to the base of the case. The rimmed cartridge, sometimes called flanged cartridge, is the oldest of the types and has a rim that is larger in diameter than the base of the cartridge. Rimmed cartridges use the rim to hold the cartridge in the chamber of the firearm, because the rimmed cartridge headspaces on the rim, the case length is of less importance than rimless cartridges. This allows some firearms chambered for similar rimmed cartridges to safely chamber and fire shorter cartridges, rimmed cartridges are well suited to certain types of actions, such as revolvers, where the rim helps hold the cartridge in position, and break-action firearms. Semi-automatic handguns have been chambered in rimmed cartridges as well, for example a LAR Grizzly or Desert Eagle in.357 or.44 Magnum, under the metric cartridge designation system, a capitalized R added at the end of the designation denotes a rimmed cartridge. For example,7. 62×54mmR is a cartridge, while 7. 62×51mm is a rimless cartridge.45 Auto Rim. Examples of rimmed handgun cartridges include the.38 Special.357 Magnum, rimmed rifle cartridge examples include the.22 Hornet.303 British and 7. 62×54mmR. Rimless cases are not well suited to break-open and revolver actions, though they can be used with modifications, such as a spring-loaded extractor or, in a revolver. Crimping affects the length of the cartridge, and thus cannot be used on cartridges which headspace on the case mouth. Examples of rimless handgun cartridges include the 9mm Parabellum.40 S&W, rimless rifle examples include the.223 Remington.308 Winchester. 30-06 Springfield and 7. 92×57mm Mauser. On a semi-rimmed case the rim projects slightly beyond the base of the case, the tiny rim provides minimal interference feeding from a box magazine, while still providing enough surface to headspace on. Semi-rimmed cases are less common than the other types, if the chamber is cut shallow, so the case headspaces off the mouth, the rim is used for extraction only, a standard chamber will use the rim for both headspacing and extraction. Examples of more commonly encountered rimless handgun cartridges are.25 ACP.32 ACP and.38 ACP, while the.308 Marlin Express.338 Marlin Express and.444 Marlin are rifle cartridges that are semi-rimmed. Rebated rim cartridges have a rim that is smaller in diameter than the base of the case. Functionally the same as a case, the rebated rim provides some additional benefits when considered in conjunction with other cartridges. One example of a rebated rim cartridge is the.50 Action Express, by using the same rim dimensions as the.44 Magnum, a Desert Eagle could be converted from.44 Magnum to.50 AE by merely changing the barrel and magazine
9.
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
10.
Firearm
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A firearm is a portable gun - a barreled weapon that launches one or more projectiles, often driven by the action of an explosive force. The first primitive firearms originated in 13th-century China when the fire lance was combined with projectiles. The technology gradually spread through the rest of East Asia, South Asia, older firearms typically used black powder as a propellant, but modern firearms use smokeless powder or other propellants. Most modern firearms have rifled barrels to impart spin to the projectile for improved flight stability, modern firearms can be described by their caliber or in the case of shotguns their gauge, by the type of action employed together with the usual means of deportment. The word firearms usually is used in a sense restricted to small arms, shooters aim firearms at their targets with hand-eye co-ordination, using either iron sights or optical sights. The accurate range of pistols generally does not exceed 100 yards, while most rifles are accurate to 550 yards using iron sights, some purpose-built sniper rifles are accurate to ranges of more than 2,200 yards. The smallest of all firearms is the handgun, there are three common types of handguns, single-shot pistols, revolvers, and semi-automatic pistols. Revolvers have a number of firing chambers or charge holes in a revolving cylinder, semi-automatic pistols have a single fixed firing chamber machined into the rear of the barrel, and a magazine so they can be used to fire more than one round. Each press of the fires a cartridge, using the energy of the cartridge to activate the mechanism so that the next cartridge may be fired immediately. This is opposed to double-action revolvers which accomplish the end using a mechanical action linked to the trigger pull. Prior to the 19th century, virtually all handguns were single-shot muzzleloaders, with the invention of the revolver in 1818, handguns capable of holding multiple rounds became popular. Certain designs of auto-loading pistol appeared beginning in the 1870s and had largely supplanted revolvers in military applications by the end of World War I. By the end of the 20th century, most handguns carried regularly by military, police and civilians were semi-automatic, both designs are common among civilian gun owners, depending on the owners intention. A long gun is any firearm that is larger than a handgun and is designed to be held. Early long arms, from the Renaissance up to the century, were generally smoothbore firearms that fired one or more ball shot. Most modern long guns are either rifles or shotguns, both are the successors of the musket, diverging from their parent weapon in distinct ways. A rifle is so named for the spiral fluting machined into the surface of its barrel. Shotguns are predominantly smoothbore firearms designed to fire a number of shot, shotguns are also capable of firing single slugs, or specialty rounds such as bean bags, tear gas or breaching rounds
11.
Headspace (firearms)
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In firearms, headspace is the distance measured from the part of the chamber that stops forward motion of the cartridge to the face of the bolt. Used as a verb, headspace refers to the interference created between this part of the chamber and the feature of the cartridge that achieves the correct positioning, different cartridges have their datum lines in different positions in relation to the cartridge. For example,5.56 NATO ammunition headspaces off the shoulder of the cartridge, if the headspace is too short, ammunition that is in specification may not chamber correctly. If headspace is too large, the ammunition may not fit as intended or designed, the cartridge is said to be rimless if the extractor groove is machined into the head of the case so the rim is the same diameter as the adjacent part of the case. Most modern automatic firearms use rimless cartridges, straight-walled rimless cartridges often headspace on the forward lip of the cartridge as shown in the diagram at the top of this article. This necessitates careful attention to consistent case length, bottle-necked rimless cartridges may headspace on the conical shoulder between the narrow neck and the larger diameter portion of the case. All small arms cartridges have a flange at the base of the case called a rim, the part of the firearm called an extractor claw hooks over the rim to extract the spent case from the chamber after it has been fired. The cartridge is said to be of a type when the rim is of larger diameter than the remainder of the case. Most early cartridges were rimmed, and the ledge at the rear of the chamber prevents the cartridge from moving forward. Headspace for rimmed cartridges is the space between that forward ledge and the face when the action is closed. Some large rimless magnum cartridges have a belt formed above the extractor groove and this belt is of slightly larger diameter than the adjacent case, so the cartridge can headspace from the forward edge of the belt closest to the bullet. The original purpose of the belt was to give accurate headspacing for cartridges with shallow shoulder angles, where longitudinal precision of seating using such a shoulder presents difficulties. In effect this was similar to the function of a rim. Some more or less straight cartridges have no bottleneck to headspace on, such cylindrical shaped cartridge cases use the case mouth as a forward positioned flange used for headspacing. There are four types of control to consider based on the case type used. This style of case relies on the face of the case neck. It is from this circular conic section face, as a datum, examples include.308 Winchester.223 Remington, and 7. 92×57mm Mauser. For a rimmed case, where the rim extends beyond the diameter of the case, such as with.22 Long Rifle. 30-30 Winchester, a rimmed case can have straight, tapered, or bottlenecked case walls
12.
Colt Model 1903 Pocket Hammerless
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The Colt Model 1908 Pocket Hammerless is a variant introduced five years later in.380 ACP caliber. Despite the title Hammerless, the Model 1903 does have a hammer and it is covered and hidden from view under the rear of the slide. This allowed the pistol to be carried in, and withdrawn from a pocket quickly and smoothly without snagging, approximately 570,000 Colt Pocket Hammerless pistols were produced from 1903 to 1945, in five different types. Some were issued to US Army and US Air Force general officers from World War II through the 1970s and they were replaced in 1972 with the RIA Colt M15 General Officers Model, a compact version of the M1911A1. In addition to lawful owners, many gangsters of the pre-World War II era favored the Model 1903 and Model 1908 because they were relatively small and easily concealed. It is said that Al Capone kept one in his coat pocket, note, There was also a Colt Model 1903 Pocket Hammer pistol in.38 ACP, but this design is unrelated. The FN Model 1903 pistol design is related to the Colt Pocket Hammerless, General Officer models were often engraved with the officers name. Recipients included Generals Eisenhower, Bradley, Marshall, and Patton, pattons Model 1908 was embellished with three stars on the grip panels to denote his rank. They came in russet or black leather and were made by ALPCO or Hickock, a cleaning rod and two spare magazines were also included. Generals were issued the Model M in.380 ACP, until 1950, when supply ran out. At that point, they were substituted with.32 models until their replacement in 1972, the Pocket Hammerless was replaced by the M15 pistol made by Rock Island Arsenal in.45 ACP. Today, the Pocket Hammerless is manufactured by U. S. Armament and this pistol was actually fired by action of a hammer striking and driving a firing pin into a center-fire cartridges primer. The hammer was covered by the rear of the slide, the hammerless designation was merely an advertising designation pointing out the pistols particular suitability for concealed carry. Special features include a serrated slide to prevent slippage during manual cycling of the slide, the grip safety is a spring-loaded piece making up the back strap of the pistol. The grip safety, though not solely restricted to them, was a feature of Colt automatic pistols. A magazine safety was added on models, this feature prevents the pistol from being fired with a round in the chamber. In 1908, a.380 ACP version of this gun was introduced, called the Model 1908, it was nearly identical to the Model 1903 except for the bore diameter and the magazine, which held seven rounds. Grip panels were black checked hard rubber, checked walnut, or special order materials, sights were fixed, although the rear sight was drift-adjustable for windage. Metal finish was blued or nickel, and some special-order finishes such as engraved, Type II,32 cal separate barrel bushing, 3 3⁄4 inch barrel, 1908–1910, SN72,000 through 105,050
13.
Semi-automatic pistol
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One cartridge is fired each time the trigger of a semi-automatic pistol is pulled, the pistols disconnector ensures this behavior. Additional terms sometimes used as synonyms for a semi-automatic pistol are automatic pistol, self-loading pistol, autopistol, a semi-automatic pistol harnesses the energy of one shot to reload the chamber for the next. After a round is fired, the spent casing is ejected, most pistols use recoil operation to do this, but some pistols use blowback or gas operation. Most types of semi-automatic pistols rely on a magazine to store ammunition before it is fired. Typically, the first round is loaded into the chamber by pulling back. This is called racking the slide or racking the gun, after the trigger is pulled and the round is fired, the recoil operation of the handgun automatically extracts and ejects the shell casing and reloads the chamber. This mode of operation allows for faster reloading and storing a larger number of cartridges than a revolver. Each pull of the trigger on a DAO semi-automatic pistol requires the amount of pressure. The Kel-Tec P-32 is an example of a DAO action, DAO semi-automatic pistols are most generally recommended only in the smaller, self-defense, concealable pistols, rather than in target or hunting pistols. A notable exception is Glock-brand pistols which optimize preset triggers, and this allows for significantly shorter trigger pulls than DAO. The trigger spring can be replaced with a one and paired with a low-strength sear connector resulting in lightened trigger pulls to improve a shooters accuracy. Standard modern semi-automatic pistols are double action, also sometimes known as double-action/single-action. In this design, the hammer or striker may be either thumb-cocked or activated by pulling the trigger when firing the first shot, the hammer or striker is recocked automatically during each firing cycle. In double-action pistols, the first pull of the trigger requires roughly twice as much pressure as subsequent firings, the Beretta 92F/FS, a full-sized, service, semi-automatic pistol is an example of this style of action. A common mode of carry for DA semi-automatic pistols is with the full, a round chambered. In contrast, a single-action semi-automatic pistol must be cocked by first operating the slide or bolt, or, if a round is already chambered, the famed Colt M1911 is an example of this style of action. All SA semi-automatic pistols exhibit this feature, and automatically cock the hammer when the slide is first racked to chamber a round, a round can also be manually inserted in the chamber with the slide locked back. Then the safety can be applied, the normal mode of carrying an SA semi-automatic pistol is condition 1, popularly known as cocked and locked
14.
Self-defense
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Self-defense is a countermeasure that involves defending the health and well-being of oneself from harm. The use of the right of self-defense as a justification for the use of force in times of danger is available in many jurisdictions. Physical self-defense is the use of force to counter an immediate threat of violence. Such force can be armed or unarmed. In either case, the chances of success depend on a number of parameters, related to the severity of the threat on one hand. Many styles of arts are practiced for self-defense or include self-defense techniques. Some styles train primarily for self-defense, while other martial or combat sports can be applied for self-defense. Some martial arts train how to escape from a knife or gun situation, or how to break away from a punch, a wide variety of weapons can be used for self-defense. The most suitable depends on the threat presented, the victim or victims, legal restrictions also greatly influence self-defence options. In many cases there are legal restrictions. Non-injurious water-based self-defense indelible dye-marker sprays, or ID-marker or DNA-marker sprays linking a suspect to a scene, would in most places be legal to own. Tie-wraps double as an effective restraint, weapons such as the Kubotan have been built for ease of carry and to resemble everyday objects. Ballpoint pen knives, swordsticks, cane guns and modified umbrellas are similar categories of concealed self-defense weapons that serve a dual purpose, mental self-defense is the ability to get into the proper mindset for executing a physical self-defense technique. Many martial arts schools and self-defense classes focus primarily on the nature of self-defense. If you are skilled in the aspects of a defensive technique. Controlled environments cannot easily mimic the stress and adrenaline dump which occurs during an attack, there is a very real need to be able to enter the proper warrior mindset if one is to have a realistic chance of surviving a potentially deadly encounter. The ability to go over, under, around or through any obstacle is the essence of this never quit mindset - similar to that of the Samurai of Japan, being aware of and avoiding potentially dangerous situations is one useful technique of self-defense. Attackers will typically select victims they feel they have an advantage against, such as physical size
15.
Blowback (firearms)
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Several blowback systems exist within this broad principle of operation, each distinguished by the methods used to control bolt movement. A few locked breech designs use a form of blowback to perform the unlocking function, the blowback principle may be considered a simplified form of gas operation, since the cartridge case behaves like a piston driven by the powder gases. Other operating principles for self-loading firearms include blow forward, gas operation and this rearward thrust, imparted against the breech, is a direct result of the expansion of propellant gases. The energy from the expansion of gases on firing appears in the form of energy transmitted to the bolt mechanism. The extent to which blowback is employed largely depends on the used to control the movement of the bolt. How the movement of the bolt is controlled is where blowback systems differ, relating blowback to other types of automatic firearm operation, George M. Chinn wrote that, In the larger sense, blowback might well be considered a special form of gas operation. This is reasonable because the case may be conceived of as a sort of piston driven by the powder gases. Actually, blowback involves so many problems that it is best considered to be in a class by itself. The question whether or not it should be included within the general class of gas operation or recoil operation is purely academic. The important point is that it some of the properties of both classes and, depending on the particular problem at hand, may be considered to be either one. The blowback system represents the most basic auto loading operation type, in a blowback mechanism, the bolt rests against the rear of the barrel, but is not locked in place. At the point of ignition, expanding gases push the bullet forward through the barrel while at the same time pushing the case rearward against the bolt. The expanding gases push the bolt assembly to the rear, but the motion is slowed by the mass of the bolt, internal friction, the design must ensure that the delay is long enough that bullet exits the barrel before the cartridge case clears the chamber. The empty case is ejected as the travels to the rear. The stored energy of the action spring then drives the bolt forward. A new cartridge is stripped from the magazine and chambered as the returns to its in-battery position. The blowback system is practical for firearms using relatively low-power cartridges with lighter weight bullets, higher power cartridges require heavier bolts to keep the breech from opening prematurely, at some point, the bolt becomes too heavy to be practical. Consequently, the spring is not powerful enough to keep the bolt closed when the gun is tilted up
16.
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
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Recoil operation
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Recoil operation is an operating mechanism used to implement locked-breech, autoloading firearms. Recoil operated firearms use the energy of recoil to cycle the action, the same forces that cause the ejecta of a firearm to move down the barrel also cause all or a portion of the firearm to move in the opposite direction. The moving and the masses are coupled by a spring that absorbs the recoil energy as it is compressed by the movement. Since there is a minimum required to operate a recoil-operated firearms action. Therefore, recoil-operated firearms work best with a cartridge that yields an approximately equal to that for which the mechanism was optimized. For example, the M1911 design with factory springs is optimized for a 230-grain bullet at factory velocity, changes in caliber or drastic changes in bullet weight and/or velocity require modifications to spring weight or slide mass to compensate. Recoil-operated designs are categorized by how the parts move under recoil. Long recoil operation is primarily in shotguns, particularly ones based on John Brownings Auto-5 action. In a long recoil action the barrel and bolt remain locked together during recoil, following this rearward movement, the bolt locks to the rear and the barrel is forced forward by its spring. The bolt is held in position until the barrel returns completely forward during which time the spent cartridge has been extracted and ejected, the bolt is released and forced closed by its recoil spring, chambering a fresh round. The long recoil system was invented in the late 19th century, bolt is locked to barrel, both are fully forward. Recoil of firing forces bolt and barrel fully to the rear, bolt is held to rear, while barrel unlocks and returns to battery under spring force. Bolt returns under spring force, loads new round, barrel locks in place as it returns to battery. The short recoil action dominates the world of centerfire semi-automatic pistols, short recoil operation differs from long recoil operation in that the barrel and bolt recoil together only a short distance before they unlock and separate. The barrel stops quickly, and the bolt continues rearward, compressing the spring and performing the automated extraction. During the last portion of its travel, the bolt locks into the barrel. The method of locking and unlocking the barrel differentiates the wide array of short recoil designs. Most common are the John Browning tilting barrel designs based on either the swinging link and locking lugs as used in the M1911 pistol or the linkless cam design used in the Hi Power and CZ75
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Bolt thrust
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The applied force has both magnitude and direction, making it a vector quantity. Bolt thrust is an important factor in weapons design, the greater the bolt thrust, the stronger the locking mechanism has to be to withstand it. Assuming equal engineering solutions and material adding strength to a locking mechanism causes an increase in weight, bolt thrust is not a measure to determine the amount of recoil/free recoil. With a basic calculation the bolt thrust produced by a firearms cartridge can be calculated fairly accurately. F → b o l t = P m a x ⋅ A i n t e r n a l, the area enclosed by a circle is, A r e a = π r 2 ≈3. Where, π ≈3.1416 r = the radius of the circle Equivalently, a practical problem regarding this method is that the internal case head diameter of a particular production lot of cartridge cases can not be easily measured without damaging them. A complicating matter regarding bolt thrust is that a cartridge case expands and deforms under high pressure and this friction-effect can be accounted for with finite elements calculations on a computer, but it is a lot of specialized work and generally not worth the trouble. By oiling proof rounds during NATO EPVAT testing procedures, NATO test centers intentionally lower case friction to promote high bolt thrust levels. The basic calculation method is almost the same, but now the larger area of the cartridge case head is used instead of the smaller inside area. F b o l t → = P m a x ⋅ A e x t e r n a l, the P1 diameters and Pmax used in the calculations were taken from the appropriate C. I. P. The P1 diameters and Pmax used in the calculations were taken from the appropriate C. I. P, blaser R93 Unfälle - zur Verschlußbelastung Zylinderverschluß - Verschlußkräfte
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Mass
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In physics, mass is a property of a physical body. It is the measure of a resistance to acceleration when a net force is applied. It also determines the strength of its gravitational attraction to other bodies. The basic SI unit of mass is the kilogram, Mass is not the same as weight, even though mass is often determined by measuring the objects weight using a spring scale, rather than comparing it directly with known masses. An object on the Moon would weigh less than it does on Earth because of the lower gravity and this is because weight is a force, while mass is the property that determines the strength of this force. In Newtonian physics, mass can be generalized as the amount of matter in an object, however, at very high speeds, special relativity postulates that energy is an additional source of mass. Thus, any body having mass has an equivalent amount of energy. In addition, matter is a defined term in science. There are several distinct phenomena which can be used to measure mass, active gravitational mass measures the gravitational force exerted by an object. Passive gravitational mass measures the force exerted on an object in a known gravitational field. The mass of an object determines its acceleration in the presence of an applied force, according to Newtons second law of motion, if a body of fixed mass m is subjected to a single force F, its acceleration a is given by F/m. A bodys mass also determines the degree to which it generates or is affected by a gravitational field and this is sometimes referred to as gravitational mass. The standard International System of Units unit of mass is the kilogram, the kilogram is 1000 grams, first defined in 1795 as one cubic decimeter of water at the melting point of ice. Then in 1889, the kilogram was redefined as the mass of the prototype kilogram. As of January 2013, there are proposals for redefining the kilogram yet again. In this context, the mass has units of eV/c2, the electronvolt and its multiples, such as the MeV, are commonly used in particle physics. The atomic mass unit is 1/12 of the mass of a carbon-12 atom, the atomic mass unit is convenient for expressing the masses of atoms and molecules. Outside the SI system, other units of mass include, the slug is an Imperial unit of mass, the pound is a unit of both mass and force, used mainly in the United States
20.
Remington Model 51
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The Remington Model 51 is a small pocket pistol designed by John Pedersen and manufactured by Remington Arms in the early 20th century for the American civilian market. Remington manufactured approximately 65,000 Model 51 pistols in.32 ACP and.380 ACP calibers from 1918 to 1927, John Pedersen designed or was instrumental in the design of many firearms for the Remington Arms Company. He had worked in concert with John Browning to design the Remington Model 17 which served as the basis for the Remington Model 31, Ithaca 37, Browning BPS and he designed the Pedersen device that converted the M1903 Springfield into an autoloading intermediate-caliber longarm. Pedersen later worked for the US Army and provided competition to John Garand building a rifle to fire a full-power rifle cartridge. His design used innovative wax lubricated cases and a system much like that of the Luger pistol. Made in.380 ACP and later in.32 ACP caliber, while the European market embraced small-caliber pocket pistols, the American market favored revolvers at the time. The complex trigger and safety mechanisms made the more expensive than the Browning-designed competition. Furthermore, Remington was a known for their long arms. The Remington Model 51 also had limited commercial success as it was priced around US$15.75. This was in spite of the claims of it be self aiming due to the advanced approach to ergonomics used by Pedersen. If competing with cheaper single-action blowback autoloaders made sales difficult, the market crash made sales nearly impossible. Impending autoloading pocket pistols like the Walther PPK ended any chance of success by Remington pistols. For the smaller calibers it was made in, blowback operated pistols were cheaper, only slightly heavier, general George S. Patton owned a Remington 51 and was thought to favor the pistol. Despite critical praise, no government or private agency is known to have adopted the Model 51 for use. An anchor proof marking on some pistols has led to the belief that they were US Navy pistols bolstered by the fact that the Navy did indeed recommend a. 45-caliber version for adoption. Some examples are today with inventory numbers, however their provenance is not well known and understood to have numbered one. Subsequently, the Navy ran extensive tests on the M53 and concluded it was “. a simple, rugged and entirely dependable weapon and this served to delay the opening of the breech rather than locking it. The pistol was planned for manufacture but was never produced, the Italian firm Benelli produced limited numbers of B76, B80, and B82 pistols similar to the Rudd pistol however utilizing a lever-delayed blowback system
21.
Kel-Tec P-3AT
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The P-3AT is a locked breech, double action only.380 ACP pistol introduced by Kel-Tec in 2003 and based on the P-32. The frame is made of polymer with an insert. It is the lightest production.380 ACP pistol in the world, weighing only 8.3 oz empty, the P-3AT cartridge capacity is 6+1, and trigger pull is 5 lbf. These attributes have made it popular for citizens with concealed carry permits, the P-3AT lacks any sort of slide stop—it was omitted in order to keep the size similar to the P-32. The similar size and weight of the P-3AT results in increased felt recoil over the P-32 due to the more powerful.380 ACP cartridge, the Kel-Tec P-3AT is available with blued, parkerized, or matte chrome slide. The polymer frame is available in black, grey, navy blue, or olive drab green solid colors, as well as Urban Blue/Grey, current production is the second generation model, with improvements over the first generation. The most easily distinguished difference between generations is the extractor, in a Guns & Ammo review, Wiley Clapp said, Ingenuity is often nothing more than a combination of existing principles applied in unique ways. Kel-Tecs new P-3AT has no feature that is not established in modern pistol design. Since Rugers introduction of its LCP pocket pistol, some reviewers have characterized the Ruger offering as comparable to the P-3AT, other reviewers such as Gun-tests. com have said things like Ruger had simply copied the Kel-Tec 380s design. Kahr Arms has introduced a pistol, the Kahr P380. At the 2010 SHOT Show, Smith & Wesson introduced their S&W.380 Bodyguard, SIG Sauer offers the P238 with an all-metal frame in competition to those mostly plastic-framed pistols. Official site Instruction manual Kel-Tec owners group Review of the Kel-Tec P-3AT from American Rifleman Mousegunners Review of his Kel-Tec P-3AT Keltec P3AT.380 Mousegun - review by The Deserts Edge
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Glock
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It entered Austrian military and police service by 1982 after it was the top performer on an exhaustive series of reliability and safety tests. Glocks are also popular firearms among civilians for recreational and competition shooting, home and self-defense, the companys founder, engineer Gaston Glock, had no experience with firearms design or manufacture at the time their first pistol, the Glock 17, was being prototyped. Glock introduced ferritic nitrocarburizing into the industry as an anticorrosion surface treatment for metal gun parts. In 1980, the Austrian military announced that it would seek tenders for a new, the Austrian Ministry of Defence formulated a list of 17 criteria for the new generation service pistol, The design was to be self loading. The pistol was to fire the NATO-standard 9×19 mm Parabellum round, the magazines were not to require any means of assistance for loading. The magazines were to have a capacity of eight rounds. It was to be possible to all actions one handed which are necessary to prepare the pistol for firing. The pistol was to be secure against accidental discharge from shock, strike. Disassembly of the parts for maintenance and reassembling was to be possible without the use of any tools. Maintenance and cleaning of the pistol was to be accomplished without the use of tools, the pistols construction was not to exceed 58 individual parts. Gauges, measurement tools, and precise testing devices were not to be necessary for the maintenance of the pistol. The manufacturer was to be required to provide the ministry of defence with a set of engineering drawings. These were to be supplied all the relevant details for the production of the pistol. All components were to be interchangeable between pistols. No more than 20 malfunctions were to be permitted during the first 10,000 rounds fired, after firing 15, 000-rounds of standard ammunition, the pistol was to be inspected for wear. The pistol was to then be used to fire an overpressure test cartridge generating 5,000 bar, the critical components were to continue to function properly and be up to specifications, otherwise the pistol was to be disqualified. When handled properly, under no circumstances was the user to be endangered by case ejection, the muzzle energy was to be at least 441.5 J when firing a 9×19 mm S-round/P-08 by Hirtenberger AG. Pistols scoring less than 70% of the available points were not to be considered for military use
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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
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MAC-11
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The Ingram MAC-11 is a subcompact machine pistol developed by American gun designer Gordon Ingram at the Military Armament Corporation during the 1970s. The weapon is a version of the Model 10, and is chambered to fire the smaller.380 ACP round. This weapon is sometimes confused with the Sylvia & Wayne Daniels M-11/9 or the Vulcan M-11-9, cobray also made a.380 ACP variant called the M12. A specific suppressor was developed for the MAC-11, which used wipes as baffles, though wipes are less durable than reflex baffles, they had the advantage of proving quieter for the MAC-11. The suppressor is 224mm in length and is covered with Nomex-A heat-resistant material, like the larger M-10, the M-11 has open sights with the rear pinhole sight welded to the receiver. These sights are for use with the stock, as using them without the stock is nearly useless because of the initial jump of the weapon due to its heavy. The M-11A1 also has two safety features which are found on the Model 10A1. The charging handle rotates to 90 degrees to lock the bolt in the forward position thus preventing the weapon from being cocked, the second safety is a slider which is pushed forward to lock the trigger, which in turn pins the bolt to the rear position. This prevents the weapon from discharging even when dropped, which is not uncommon with an open-bolt design, the rate of fire of the M-11A1 is one of the biggest complaints on the firearm. Listed as approximately 1,200 rpm, the MAC-11 is capable of emptying the entire 32-round magazine in less than two seconds, which many view as a drawback. Rate of fire will also vary depending on the weight of bullets used, the gun also has a selector switch that allows it to fire only one round at a time in the semi-automatic mode. Noting the weapons accuracy, in the 1970s International Association of Police Chiefs weapons researcher David Steele described the MAC series as fit only for combat in a phone booth. The M-11 is the least common version in the MAC family of firearms, at the MAC-11s high cyclic rate, extreme trigger discipline is required to discharge short bursts, which are required for combat expediency. MAC-type submachine guns and semi-automatic pistols were first manufactured by the Military Armament Corporation, cobray, Jersey Arms, Leinad, MasterPiece Arms, and Vulcan. MAC-10 MGP-84 Randal Stepan, Nolan Wilson, Gary Reisewitz
United States — .380 Auto, .380 ACP.
European Union
