Associated components are the M63 antiaircraft mount and the M3 tripod mount. The M2A1 with Quick Change Barrel (QCB) is an enhancement to the M2 .50 Caliber Machine Gun. It offers Soldiers ...

The Army wanted 1,500 M2A1 models, but Rock Island Arsenal couldn't meet the demand. Ultimately, only around 94 M2A1s were produced before the Army canceled the contract to make room for the M3 ...