The M2 .50 Caliber Machine Gun is automatic, belt-fed, recoil-operated and air-cooled. It mounts on M3 and M205 tripods and on most vehicles while also serving as an anti-personnel and anti-aircraft weapon. It is highly effective against light armored vehicles, low- and slow-flying aircraft and small boats. The M2 provides automatic weapon suppressive fire for offensive and defensive purposes. It is capable of singe-shot (ground M2 Machine Gun) and automatic fire. The M2A1 with Quick Change Barrel (QCB) is an enhancement to the M2 .50 Caliber Machine Gun. It offers Soldiers increased performance as well as new features and design improvements that make it easier and safer to use. The M2A1 features a fixed headspace and timing configuration, flash hider and removable carrying handle to increase the performance of the battle-proven M2. The M2A1 speeds target engagement and improves survivability and safety. It reduces the time required to change the barrel while eliminating the timely procedure of setting headspace. The flash hider reduces muzzle flash by 95%, making the M2A1 less detectable in darkness. Specifications : Caliber: .50 caliber (12.7mm) Weight: M2 receiver and barrel 84 pounds; M2A1 receiver and barrel with flash hider and carrying handle 86 pounds. Length: M2 65.13 inches; M2A1 67.75 inches with flash hider Range: 1,830m Fan Funding : PayPal : arronlee33@hotmail.com. Thanks a lot for your support! :-)