When your silencer is equipped with the Plan-B mount & Cherry Bomb muzzle brake by Q, you can enjoy your silencer without fear of launching it down range. As you'd expect, we accomplish this by utilizing tapers on both the Cherry Bomb and the Plan-B mount. This provides a better lock-up thanks to increased surface area, guarantees improved alignment of your silencer, and protects your threads from carbon exposure. No shims, washers, latches, springs, gimmicks, or timing of the muzzle device required! Product Specifications Material & Coating: Heat Treated 17-4 Stainless Steel Mount: Cherry Bomb Muzzle Brake Required Tools: Props To Silencerco For Having The Forethought To Include The Tools Needed To Install Replacement Mounts.