KynSHOT Recoil Buffer is a hydraulic buffer system designed to fit AR-10 rifles with a Mil-Spec style rifle length A1 or A2 fixed stock buffer tube (internal depth 9.5). The RB5006 can be paired with any style rifle buffer spring, and is a simple drop-in replacement for all buffer systems on the market. The buffer's patented technology absorbs the recoil impulse from the bolt carrier's rearward motion, preventing bolt bounce as a new round is chambered. The RB5006 reduces felt recoil by 30%, improving the shooter's overall accuracy and eliminating muzzle flip. This item cannot be shipped to Illinois or Washington.