The Model 327 TRR8 is an 8-shot N-frame .357 Magnum with a scandium alloy frame, titanium cylinder, full-length Picatinny rail on the top strap, and an accessory rail under the barrel for lights and lasers. Designed for tactical revolver use with the ability to mount modern accessories. The TRR8 represents the most accessory-ready factory revolver S&W has produced. Type: Revolver Action: Double-Action Caliber: .357 Magnum Capacity: 8 Year introduced: 2007, USA Weight: 35.3 oz Overall length: 10.5" Status: Active Intended use: Competition, Tactical