Smith & Wesson K-22 Target Masterpiece Revolver is a six-shot, double-action revolver with adjustable open sights, built on the medium-size “K” frame. When introduced, it was intended for bullseye target shooting competition of the type then most common on the United States, which is today called NRA precision pistol, specifically in the “smallbore” or “22” category. It is chambered for the 22lr cartridge.