Q Plan-B Omega 1.375inx24 Tpi HUB 17-4 Copper Stainless Steel Fits Cher Extra Large PLANBOMEGAXL. 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 Specifications for Q Plan-B Omega XL Suppressor Mount: Manufacturer: Q Color: Copper Finish: Copper Threads per Inch: 1.375x24 Weight: 1.85 oz Package Contents: Q Plan-B Omega XL Suppressor Mount Q PLANBOMEGAXL: Plan-B Omega 1.375inx24 Tpi HUB 17-4 Copper Stainless Steel Fits Cher Extra Large