You'll find eight forms of ammunition issued for use in the M2 Browning .50 caliber machine gun, with the tips of the varied rounds color-coded to indicate their form; these involve: Moreover, the weight and quite superior recoil with the M2 demand a sturdy and rigid mount for productive shooting, https://machguns.com/product/lot-1496-rock-island-armory-m60-machine-gun-class-iii-nfa/