The Power Custom Hammer and Sear Pack is an inexpensive and easy way to upgrade the performance of your Ruger 10/22. When properly installed, this kit produces a remarkably light 2-3/4 lb trigger pull. Fitting the sear to the safety will require hand stoning. Please note that without hand stoning, the safety will appear on but the rifle may still fire. Kit Includes:Extra Power Hammer SpringExtra Power Disconnector SpringReplacement Trigger Return Spring2 Hammer Shims2 Hammer Bushings2 Trigger ShimsNotes: Some Ruger 10/22 models will require the use of two Ruger hammer bushings for proper installation (Included in package).