The K-Frame revolver is one of the most important innovations in Smith & Wesson history and was built specifically to handle the .38 S&W Special cartridge. Since its introduction in 1899 the K-Frame has been a favorite for military and police professionals as well as target shooters and enthusiasts. Today’s K-Frame is available in .22 LR .357 Magnum and .38 S&W Special. – Full Top Strap and Barrel Serration – Ball-Detent Lock-Up – 2-Piece Barrel – Full-Length Extractor Rod – Caliber: .357 Magnum .38 S&W SPECIAL +P – Capacity: 6 – Barrel Length: 2.75 / 6.9 cm – Overall Length: 7.8 – Front Sight: Red Ramp – Rear Sight: White Outline Adjustable – Action: Single/Double Action – Grip: Synthetic – Weight: 33.5 oz / 949.7g – Cylinder Material: Stainless Steel – Barrel Material: Stainless Steel – Frame Material: Stainless Steel