Volquartsen Ruger 10/22 and 10/22 Magnum Target Hammer and Bushings - VC10TH.pBy simply replacing the Ruger 10/22 factory hammer with this quality target unit, a smooth 2-1/2 to 2-3/4 lb trigger pull is attained. The hammer notch is precision surface ground, and does not require any fitting or stoning. Includes the target hammer with shims and bushings, hammer spring and trigger spring.