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Awesome rifles: The best and the baddest
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The M4 carbine is a family of firearms that was derived from earlier carbine versions of the M16 rifle, which was in turn derived from the original AR-15 rifle that Eugene Stoner designed and ArmaLite manufactured. The M4 is a shorter and lighter variant of the M16A2 assault rifle. It is a gas-operated, magazine-fed, selective fire, shoulder-fired weapon with a telescoping stock and 14.5 in (370 mm) barrel to ease close quarters combat. Like the rest of the M16 family, it fires the .223 caliber, or 5.56 mm NATO round. The M4 has selective fire options including semi-automatic and three-round burst (like the M16A2 and M16A4), while the M4A1 has the capability to fire fully automatic instead of three-round burst (like the M16A1 and M16A3). The carbine is also capable of mounting an M203 grenade launcher (the M203A1 with a 9-inch barrel as opposed to the standard 12-inch barrel of the M203 used on the M16 series) as well as its successor, the M320 grenade launcher. The M4 carbine is heavily used by the U.S military. It will eventually replace the M16 rifle for most combat units in the United States Army. The winner of the Individual Carbine competition was to supplement the M4 carbine in U.S. Army service; all other services will continue using the M4 carbine and M16 rifles.
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