The Colt Peacekeeper in .357 Magnum with 4-inch barrel, a matte-finish combat-oriented .357 Magnum revolver produced from 1985 to 1988. One of the last Colt duty revolvers before the semi-automatic transition. Type: Revolver Action: Double-Action Caliber: .357 Magnum Capacity: 6 Year introduced: 1985, USA Weight: 42 oz Overall length: 9" Status: Discontinued Intended use: Law Enforcement, Collecting