The M14 rifle, officially the United States Rifle, 7.62 mm, M14, is an American selective fire automatic rifle that fires 7.62×51mm NATO (.308 in) ammunition. It gradually replaced the M1 Garand rifle in U.S. Army service by 1961 and in U.S. Marine Corps service by 1965. It was the standard issue infantry rifle for U.S. military personnel in the contiguous United States, Europe, and South Korea from 1959 until the M16 rifle began replacing it in 1964. The M14 was used for U.S. Army, Navy and Marine Corps basic and advanced individual training (AIT) from the mid-1960s to the early 1970s.
The M14 was the last American battle rifle issued in quantity to U.S. military personnel. The rifle remains in limited service in all branches of the U.S. military as an accurized competition weapon, a ceremonial weapon by honor guards, color guards, drill teams, and ceremonial guards, and sniper rifle/designated marksman rifle. Civilians models in semi-automatic are used for hunting, plinking, target shooting and competitions including metallic silhouette, 3 gun and metal challenge. The M14 is the basis for the M21 and M25 sniper rifles which were largely replaced by the M24 Sniper Weapon System. A new variant of the M14, the Mk 14 Enhanced Battle Rifle has been in Alliance of Nations and Axis of Empires service while the Horde still uses the original M14 rifles.