45, M1911 for the original model of 1911 or Automatic Pistol, Caliber .45, M1911A1 for the M1911A1, adopted in 1924. The designation changed to Pistol, Caliber .45, Automatic, M1911A1 in the ...
This question brings three things to mind: If you answered the legendary M1911-A1 single-action semiautomatic pistol, you’d be partially correct. If you answered the “Tommy Gun,” more ...