Smith & Wesson's unique M&P340 Scandium Alloy high strength frames allow for the lightest revolvers capable of firing .357 S&W Magnum. The Smith & Wesson J-Frame has become the most popular small frame personal defense revolver on the market with decades of reliable performance to its credit.Specifications: Model: M&P340 Caliber: .357 Magnum / .38 S&W Special +P Capacity: 5 Rounds Barrel Length: 1.875 in. / 4.7 cm Front Sight: XS Sights 24/7 Tritium Night Rear Sight: Integral U-Notch Grip: Synthetic Overall Length: 6.31 in. / 16.0 cm Action: Double Action Only Weight Empty: 13.3 oz / 377.8 g Material: Scandium Alloy Frame Stainless Steel Cylinder Finish: Matte Black Frame Size: Small - Internal Hammer