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Reference.org
M1911 pistol
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<p>The Colt M1911 (also known as 1911, Colt 1911, Colt .45, or Colt Government in the case of <a href="/facts/Colt%27s_Manufacturing_Company/zXuVKYTP">Colt</a>-produced models) is a <a href="/facts/Single-action/e95STa6G">single-action</a>, <a href="/facts/Recoil-operated/YpobDqQw">recoil-operated</a>, <a href="/facts/Semi-automatic_pistol/nlBHDhu2">semi-automatic pistol</a> chambered for the <a href="/facts/.45_ACP/hEdjsBlQ">.45 ACP</a> <a href="/facts/Cartridge_(firearms)/vjkWaDjM">cartridge</a>. </p>