is issued to crew members on Military Sealift Command vessels. The rifle is also used by the U.S. Border Patrol and by the Park Rangers of U.S. National Park Service. : After the Vietnam War, the People's Army of Vietnam inherited a large quantity of M14 rifles from the Republic of Vietnam Military Forces. In 2016, Factory Z113 successfully put the 7.62×51mm cartridge (designated M80) into mass-production for use in these M14 and other NATO firearms like the M60 machine gun and FN MAG. See also Beretta BM 59 Springfield Armory M1A References Further reading Duff, Scott A., John M. Miller, and contributing editor David C. Clark. The M14 Owner's Guide and Match Conditioning Instructions. Export, Penn.: Scott A. Duff Publications, 1996. . Murphy, Edward F. The Hill Fights: The First Battle of Khe Sanh. Novato, Calif.: Presidio Press, 2003. . Pisor, Robert L. The End of the Line: The Siege of Khe Sanh. New York: W.W. Norton & Company, Inc., 2002. . Rose, Alexander. American Rifle: A Biography. New York: Bantam Dell Publishing, 2008. . Stevens, R. Blake. U.S. Rifle M14: From John Garand to the M21. Toronto: Collector Grade Publications, Inc., 1995. . External links M14 to Mk 14, Evolution of a Battle Rifle 7.62×51mm NATO battle rifles Cold War firearms of the United States Rifles of the Cold War Infantry weapons of the Cold War Rifles of the United States Springfield firearms United States Marine Corps equipment Military equipment introduced in the 1950s