M14 - an American selective fire automatic rifle that fires Â (.308 Winchester) ammunition. It gradually replaced the M1 Garand 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 it was replaced by the M16 rifle in 1970. The M14 was used for U.S. Army, Coast Guard and Marine Corps basic and advanced individual training from the mid-1960s to the early 1970s. The M14 was the last American 'battle rifle' (weapons that fire full-power rifle ammunition) 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 and sniping weapon. It is also used as a ceremonial weapon by honor guards, color guards, drill teams, and ceremonial guards. The M14 serves as the basis for the M21 and M25 sniper rifles.
SP4 Michael Ferreira, left, Dallas, Tex., and SP4 David Booker, Geneva, Indiana, keep close watch during their guard duty tour on the Dak To perimeter with their M14 weapons in Vietnam on June 11, 1969. American defenders have beaten off enemy attacks in the area on 24 of the last 31 nights. (AP Photo/Cornu)