Volquartsen Target Hammer Kit for the Ruger 10/22- The target hammer kit was designed to give the factory Ruger 10/22 a superb “trigger job” by simply replacing the factory hammer. No stoning or fitting is required. Reduces trigger pull down to approximately 2.5 - 2.75lbs. Made of stainless steel, hardened to Rc 58–60. Includes a Volquartsen 10/22 hammer spring, hammer bushings, hammer shims and trigger return spring.