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The M1911 is a single-action, semi-automatic, magazine-fed, recoil operated pistol chambered for the .45 ACP cartridge. [1] It served as the standard issue sidearm for the United States Armed Forces from 1911 to 1985. It was used by the British as a sidearm during World War I.

References Edit

  1. Pistol, Caliber .45, Automatic, M1911 Technical Manual TM 9-1005-211-34 1964 edition. Pentagon Publishing. 1964. p. 64. ISBN 978-1-60170-013-1.