The Commander was the first aluminum-frame 1911 variant, introduced to meet military requirements for a lighter carry pistol. It pioneered the Commander-length 4.25-inch barrel that has become one of the most popular 1911 formats today. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 7 Year introduced: 1950, USA Weight: 26.5 oz Overall length: 7.875" Status: Active Military use: Yes Intended use: Carry, Service, Collection