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. This model has a stainless steel barrel, frame, and cylinder, black synthetic grips, and red ramp front and adjustable rear sights.