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 ...

30 caliber machine guns on sponson mounts ... 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 ...