Firearm
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A firearm is any type of gun that shoots projectiles using high explosive pressure generated from combustion of chemical propellant, most often black powder in antique firearms and smokeless powder in
The Colt Single Action Army, a revolver chambered in .45 Colt
The Glock 19, a pistol chambered in 9×19mm Parabellum
The Mosin–Nagant, a rifle chambered in 7.62×54mmR
The Mossberg 500, a shotgun chambered in 12-gauge
M16 rifle
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The M16 rifle is a family of assault rifles adapted from the ArmaLite AR-15 rifle for the United States military. The original M16 rifle was a 5.56×45mm automatic rifle with a 20-round magazine.
Firearm
…in front of the breech instead of behind it. Examples of assault rifles include Kalashnikov rifle(such as the AK-47, AKM, and AK-74), the American M16 rifle and its M4 carbine variant, the Austrian Steyr AUG, the Belgian FN FAL and FNC, and the German Heckler & Koch G36. A battle rifle is commonly defined…
M16A2, multi-sided view
From top to bottom: M16A1, M16A2, M4A1, M16A4.
A Marine of the 3rd Battalion, 1st Marines cleans his XM16E1 in December 1967.
Front cover – The M16A1 Rifle – Operation and Preventive Maintenance by Will Eisner, issued to American soldiers in 1969 during the Vietnam War