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
A semi-automatic pistol is a repeating handgun that automatically ejects and loads cartridges in its chamber after every shot fired, but only one round of ammunition is fired each time the trigger is
A Glock 22 semi-automatic pistol chambered in .40 S&W with a tactical light mounted below its barrel.
A Smith & Wesson CS45 double-action/single-action pistol, chambered in .45 ACP
A Mauser C96 Red 9 chambered in 9×19mm Parabellum
A Colt M1911 made in 1917, chambered in .45 ACP