The Colt Trooper Mk III was a modernized service revolver designed for law enforcement, chambered in .357 Magnum. Unlike the hand-fitted Python, the Trooper Mk III used investment casting rather than machining for some components, making it more affordable but less refined than its premium sibling. It was widely adopted by state police agencies and remained in production until 1983. A reliable, practical revolver that represents Colt's competent mid-tier offering. Type: Revolver Action: Double-Action Caliber: 357 Magnum Capacity: 6 Year introduced: 1969, USA Weight: 42 oz Overall length: 9.5" Status: Discontinued Intended use: law_enforcement, collector, duty, collection