KynSHOT AR-15 5.56/.223 Sub-Sonic and 300 Blackout Hydraulic Recoil Buffer, Silver, RB5000L

300 BLK. The RB5000L has seen heavy use with civilian competition shooters and law enforcement personnel. This buffer has patented damping technology to absorb the shock of impact from the bolt carriers rearward motion and to prevent bolt bounce as a new cartridge is chambered.