Installed the Volquartsen hammer kit in my 10/22 Saturday. It lowered the measured trigger pull from 5.5 lbs to 2.5 lbs. The kit was around $40 from Brownells. It replaced the factory hammer, some pivot bushings and a couple of springs. Amazing those parts made such a difference. Went to shoot it Sunday evening and it was 100% reliable. Good investment me thinks. It definitely improved my ability to follow through on my shot and not jerk the trigger. Groups were better.