Comstock Armory Recessed Micro Plan-B Muzzle Brake, 1/2x28, 5.56, Black NitrideRecessed Micro Brake compatible with common .900-24 adapters like the Comstock LPA, Q Plan-B, and Rearden Atlas. The recessed micro brake greatly reduces recoil and blast baffle wear, and unlike most brakes out there, it does not need to be timed with shims. Its limited protrusion can help with recessed-adapter clearance. Confirm the exact muzzle-device and suppressor combination.Product SpecificationsManufacturer: Comstock ArmoryModel / Manufacturer SKU: MBM-12-22-RUPC: 850069580308Product type: Recessed Micro Muzzle BrakeMaterial: 17-4 PH stainless steelFinish: Black nitrideWeight: 1.5 ozBarrel threads: 1/2x28Mounting system: Plan-B pattern; complete-system fitment requiredBore compatibility: .223 / 5.56mmOverall length: 1.25 inchesAdded length: 0.42 inchesMaximum barrel diameter: 0.750 inchesThe recessed body requires a barrel diameter of 0.750 inch or less. Matching the thread pitch does not establish full clearance.Compatible with the SIG Taper Cap. Other taper-shoulder adapters with a larger outside diameter may not fit.Shop the Comstock Armory MBM-12-22-R at BattleHawk Armory for your compatible setup.