The Model 340 M&P is an AirLite J-frame with a matte finish and Hogue Bantam Monogrip, configured for law enforcement backup and plainclothes carry. The M&P designation indicates the tactical configuration with XS sights and the dull finish suitable for duty use. The scandium-aluminum frame and titanium cylinder keep weight at approximately 12 ounces despite the .357 Magnum chambering. Type: Revolver Action: Double-Action Caliber: .357 Magnum Capacity: 5 Year introduced: 2004, USA Weight: 12 oz Overall length: 6.25" Status: Active Intended use: Law Enforcement, Concealed Carry