This redesigned target hammer is now fully CNC machined from billet material – no more castings! The target hammer is designed to give the factory Ruger 10/22 a superb “trigger job” by simply replacing the factory hammer. The hammer notch is precision surface ground. 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 10/22 hammer spring and trigger return spring.