The Colt Lightweight Commander .45 ACP is a usa-made semi-automatic pistol chambered in .45 ACP, introduced in 1949. Primary use: Carry. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 7 Year introduced: 1949, USA Weight: 38 oz Overall length: 7.75" Status: Discontinued Intended use: Carry