Completely new, CNC machined trigger housing with precision EDM trigger parts all pre-fitted and ready to drop-in, for a crisp, clean trigger pull. Hardened EDM sear and disconnector have tolerances held to +/- .0002". Hardened stainless steel hammer has notches surface ground to achieve the correct engagement angles, provides long-wearing performance. Reduced power hammer and sear springs lighten pull. Trigger includes overtravel adjustment. Hardened, polished trigger plunger is repositioned to depress directly to the rear as trigger is pulled; plunger spring is redesigned for better response. Oversized hammer, sear and action pins remove wobble that ruins a great action job. Includes auto bolt release and extended magazine release. 10/22® Magnum uses a unique, magnum hammer and heavier, magnum calibrated, springs.