Dark Storm Industries DS-9 9mm Extended Length Heavy Carbine Buffer, 7.5 oz, DSI-BFR-C9MM

When used with our 9mm buffer spring and DS-9 BCG the system allows the use of 9mm +P ammunition. The H-9 buffer also features an extended length to eliminate overtravel and reduces the possibility of breaking bolt latches. There is no need to run a buffer spacer with this buffer.