Joint Service Small Arms Program
The Joint Service Small Arms Program, abbreviated JSSAP, was created to coordinate weapon standardization between the various United States armed service branches.
Beretta M9
Colt Stainless Steel Pistol
Sig Sauer P226
Steyr GB
The Colt M1911 is a single-action, recoil-operated, semi-automatic pistol chambered for the .45 ACP cartridge. The pistol's formal U.S. military designation as of 1940 was Automatic Pistol, Caliber .45, M1911 for the original model adopted in March 1911, and Automatic Pistol, Caliber .45, M1911A1 for the improved M1911A1 model which entered service in 1926. The designation changed to Pistol, Caliber .45, Automatic, M1911A1 in the Vietnam War era.
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