Kynshot RB5006 Recoil Buffer Stainless SteelThe KynSHOT Recoil Buffer is a hydraulic buffer system designed and optimized to fit any AR 10 using 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 buffers patented technology absorbs the recoil impulse from the bolt carriers rearward motion, preventing bolt bounce as a new