The Smith & Wesson Model 39 was the first American-designed double-action semi-automatic pistol and the first US production pistol with an alloy frame. Established the American DA/SA pistol tradition. Type: Pistol Action: Semi-Automatic Caliber: 9mm Capacity: 8 Year introduced: 1954, USA Weight: 26.5 oz Overall length: 7.44" Status: Discontinued Intended use: Military Trials, Duty, Collecting