There are actually 8 varieties of ammunition issued for use inside the M2 Browning .fifty caliber machine gun, with the tips of the varied rounds coloration-coded to indicate their form; these incorporate: The pin hits the cartridge, firing the bullet down the barrel. When Every barrel revolves around to the https://machguns.com/product/american-180-tuned-by-val-cooper-excellent-w-extras-b01033/