The TRR8 (Tactical Rail Revolver 8) is an N-Frame 8-shot .357 Magnum with a 5-inch barrel, scandium alloy frame, and a full-length Picatinny rail for lights and optics. Designed for tactical applications. Type: Revolver Action: Double-Action Caliber: .357 Magnum Capacity: 8 Year introduced: 2006, USA Weight: 35.3 oz Overall length: 10.5" Status: Active Intended use: Tactical, Law Enforcement, Competition