This Timney set the standard for aftermarket upgrades for the Ruger 10/22 rifleA drop in complete assembly triggerFeatures an extended magazine release designed by Timney The trigger's two stages are factory tuned for a first stage pull weight of 8oz and a 1lb (16oz) second stage. Trigger allows you to become more accurate with your rifle No gunsmith needed easy to install Operates with one finger for exceptional ease and accessibility in the field Ready for the range no adjustments needed