Drop this target hammer into your 10/22 to lighten the trigger pull and get better control. This target hammer is 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. Also includes 10/22 hammer spring, hammer bushings, hammer shims and trigger return spring. I have personally installed this into every 10/22 I own! A great upgrade for any 10/22 shooter!