Upgrade the bolt handle assembly in the 10/22A(R) Slick guide rod for easy racking Interchangeable tuning springs:(White=standard, Red=10% increase, Green=10% decrease) This great upgrade kit for your 10/22A(R) will provide you with a comfortable bolt handle to grasp, a "super slick" guide rod, and the ability to tune the recoil of your rifle with our interchangeable springs. All bolt handle lengths are 1 3/4", which is 1/4" longer than the factory bolt handle assembly kit giving greater clearance for the shooter's knuckles while racking the bolt. The three tuning springs come in varying tensions for the ultimate in tuning cap Mfg: Kidd Innovative Design