The SW1911 is a stainless steel framed, single action, semi-automatic pistol based on the M1911, coming in either 9×19mm or.45 ACP.
Smith & Wesson SW1911
The Colt M1911 is a single-action, recoil-operated, semi-automatic pistol chambered primarily for the.45 ACP cartridge.
M1911 and a M1911A1, both manufactured by Colt
M1911 designer John Browning
Cross-section diagram, with labeled parts, of original Model 1911 pistol, from official Army description as published in 1917.
Springfield Mil Spec field stripped