The M&P R8 is a modern eight-shot revolver built on the large N-frame, featuring a scandium alloy frame, 5-inch barrel, integral Picatinny rail, and moon clip compatible cylinder. Designed for tactical revolver use and still produced as a premium range and defensive wheelgun. Type: Revolver Action: Double-Action Caliber: .357 Magnum Capacity: 8 Year introduced: 2007, USA Weight: 36.3 oz Overall length: 10.5" Status: Active Intended use: Duty