The RB5007 is a specially engineered KynSHOT for the AR-9mm application. Designed to work in PCC builds with 3.5" - 16" barrels, either suppressed or unsuppressed and with all common 9mm loads. This buffer has proven itself in the harsh arena of PCC competition and is the choice of many of the top ranked shooters in the world. The KynSHOT uses patented hydraulic shock absorption technology to dampen the impact of the bolt at the rear of its travel and to dampen the forward impact of the buffer’s weight as it chambers the next round. Its weight and length have been optimized for the 9mm application so that it runs reliably, softens recoil, smooths out the action, and stops just behind the bolt catch.

Bolt Weight: If your bolt has a weight in it, we recommend keeping the weight in the bolt. Removing the weight to get a lighter bolt is not recommended in blowback guns.>