M4 Carbine

Developed by Colt from the M16A2, the M4 carbine is a 5.56mm aussault rifle, which entered service with the US Army and Marine Corps in 1994. It first saw combat action in Afghanistan in 2001 in Operation Enduring Freedom and later in Iraq in 2003 in Operation Iraqi Freedom. Fitted with a 14.5″(37cm)-long barrel, it is lighter and more compact than the M16. It is a select fire, infantry weapon featuring a “Safety”, “Semi-automatic”, and “3-round-burst” selection mode lever, located on the left hand side of rifle, just above the handgrip, but the M4A1 version has a full automatic fire mode instead of the 3-round burst setting. It has a gas-operated reloading system, with rotating bolt and ejection port on the right hand side. Its receiver is fed from a 30-round box magazine. This light assault rifle also features a 4-position collapsible stock and picatinny rails for a forward handgrip, grenade launchers, optic scope, and a PEQ2 infrared illuminator. Although it is a compact and accurate rifle, the M4 carbine has a tendency to jamm in the sandy environment of the Middle East if not properly cleaned and maintained.


Type: light assault rifle

Caliber: 5.56 mm

Cartridge: 5.56x45mm NATO

Weight: 2.88 kg

Barrel length: 14.5″

Muzzle velocity: 880 m/s

Effective range: 300 m



M4 Carbine in action: shooting at the range

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Thor is Carlos Benito Camacho, the manager and writer of this blog.