The Model 327 M&P R8 is an 8-shot Scandium N-Frame .357 Magnum with an integrated Picatinny rail under the barrel and a unique two-piece barrel/shroud design. Designed for law enforcement use with light attachments and accessories. 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: Law Enforcement / Tactical