50 Caliber Machine Gun ... is used to feed the ammunition into the weapon. This gun is has a back plate with spade grips, trigger, and bolt latch release. This gun may be mounted on ground ...

U.S. Special Operations Command has laid out requirements for a new bolt-action Extreme Long Range Sniper Rifle that could replace its existing .50 caliber precision rifles. American special ...

50 caliber Browning Machine Gun cartridge ... The effort resulted in a bolt-action rifle known as the M30-Tactical System ...