Volquartsen Ruger 10/22 High Performance Action Kit Plus, Black - VC10HP-B-10-P. The HP action kit is will give the shooter a crisp, clean trigger pull reduced to approximately 2-1/4 to 2-1/2 lbs. This kit consists of a target hammer with shims, EDM disconnector, EDM sear, target trigger with overtravel adjustment, trigger plunger with an improved radius, trigger plunger spring, a special hammer spring, a recoil buffer to reduce wear on the action and bolt as well as an extended magazine release and automatic bolt release.