Colt's law enforcement variant of the Trooper Mk III, featuring a fixed rear sight rather than adjustable sights to reduce the risk of sight damage in holster carry. Designed specifically for uniformed police use. Type: Revolver Action: Double-Action Caliber: .357 Mag Capacity: 6 Year introduced: 1969, USA Weight: 38 oz Overall length: 9.5" Status: Discontinued Intended use: Police, Collecting