Easy-to-install kit replaces factory parts to eliminate trigger pre-travel and roughness for a clean, crisp, custom pull with little or no gunsmithing. Adjust the setscrew in the sear with the included Allen wrench to take up pre-travel, then lock screw in place with your favorite thread locking adhesive. Sear and hammer geometry is custom designed to produce a lighter pull and a smoother trigger return. EDM machined from A2 tool steel and heat treated to Rc 56-58, with precision-ground engagement surfaces vapor honed for smoothness. Some guns may require minor fitting for correct engagement of safety, described in the detailed instructions. Hammer/sear sets are produced as matched pairs Mfg: Power Custom SPECS: Steel, in-the-white. Sear Kit - Includes sear, disconnector/sear spring, 2 sear shims, trigger pivot pin, cheater pin. Hammer & Sear Kit - Includes Sear Kit contents plus extra-power hammer spring, 2 hammer shims, replacement trigger return spring. Complete installation ins