Definitions for "M-16"
Keywords:  rifle, vietnam, caliber, bullet, weapon
a .223 caliber (5.56 mm.) gas-operated magazine-fed rifle for semiautomatic or automatic operation used by U.S.troops since the mid-1960s.
The basic rifle used by the U. S. military since during the Vietnam War.
The standard weapon of U. S. infantrymen. It fired 5.56mm round in auto or semi-auto mode.