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The M4 carbine (officially Carbine, Caliber 5.56 mm, M4) is a 5.56×45mm NATO assault rifle developed in the United States during the 1980s. It is a shortened version of the M16A2 assault rifle. The M4 is extensively used by the US military , with decisions to largely replace the M16 rifle in US Army (starting 2010) and US Marine Corps ...
The M4 Type Carbine is a copy of the Colt M4 carbine. The semi-automatic version is marketed to the U.S. civilian market in compliance with the National Firearms Act . A select fire variant can be ordered by military or law enforcement organizations with three-round burst or fully automatic capability.
The Barrett REC7 (designation stands for "reliability-enhanced carbine") [1] is an American firearm manufactured as a selective-fire fully-automatic and semi-automatic rifle by Barrett Firearms. It is an M4 carbine utilizing a short-stroke gas piston system and is available in either 5.56×45mm NATO or 6.8mm Remington SPC .
It must be capable of selective fire, which means it has the capacity to switch between semi-automatic and burst/fully automatic fire; [4] It must have an intermediate-power cartridge: more power than a pistol but less than a standard rifle or battle rifle. For full-power automatic rifles, see List of battle rifles;
The Heckler & Koch HK416 is an assault rifle chambered for the 5.56×45mm NATO cartridge.It is designed and manufactured by the German company Heckler & Koch.. Although the design is based on the AR-15 class of firearm (specifically the Colt M4 carbine family issued to the U.S. military), it uses a proprietary short-stroke gas piston system from Heckler & Koch's earlier G36 family of rifles.
Colt Automatic Rifle (Colt/Diemaco project) A2 Square LMG S-F A2 Yes Yes 5.56 NATO 20 in. HBAR 1:7 Yes A2 777: M4E1 Carbine: 4th Generation M4 S-1-F [1] A2 Yes Yes 5.56 NATO 14.5 in. M4 1:7 Yes A2 778: M4 Carbine Enhanced: 4th Generation M4 S-1-3-F A2 Yes Yes 5.56 NATO 14.5 in. M4 1:7 Yes A2 779: M4 Carbine: 4th Generation M4 S-1-3 [1] A2 Yes ...
When an automatic sear is in place, the weapon’s trigger bar is prevented from catching its firing pin, allowing multiple rounds to be fired without additional pulls of the trigger.
2nd Lt. Val Browning with the Browning Automatic Rifle in France during World War I. An automatic rifle is a type of autoloading rifle that is capable of fully automatic fire. Automatic rifles are generally select-fire weapons capable of firing in semi-automatic and automatic firing modes (some automatic rifles are capable of burst-fire as well).