The RB5015HD can be paired with any style buffer spring, and is a simple drop-in replacement for all buffer systems on the market.    Designed in cooperation with Blitzkrieg Components, the RB5015HD reduces felt recoil by 30%, improving the shooters overall accuracy and eliminating muzzle flip. Our test data shows that the time to reacquire a target decreases, and in most cases the shooter will not have to leave their scope after taking their shot.   The RB5015HD works in PCC builds using barrel lengths 8″ and up, or all suppressed PCC’s. The RB5015HD also works with all 9mm loads, and its weight and length have been optimized for the PCC applications so that it runs reliably, softens recoil, and stops just behind the bolt catch. Our buffers patented technology absorbs the recoil impulse from the bolt carrier’s rearward motion, preventing bolt bounce as a new round is chambered.   The R5015HD can be used with an A5/AR-10 buffer tube (internal depth 7.75″), if you are using the A5 buffer tube configuration, the RB015HD should be paired with P/N: R1505098 (KynSHOT Spacer Weight). If you are shooting a CMMG Radial Delayed Blowback system, the buffer does not need to be paired with a spacer weight. If you are using a carbine buffer tube with a CMMG Radial Delayed Blowback Bolt Carrier Group, please use the RB5000HP.