Comstock Armory Compact Plan-B Muzzle Brake, 5/8x24, .45 Cal, Black Nitride The Comstock Compact 45 Cal Muzzle Brake is a purpose-built component for shooters assembling a compact, repeatable Plan-B-pattern suppressor mounting system. It combines 17-4 PH stainless steel, a black nitride finish and clearly defined tool flats to support secure installation and convenient suppressor attachment. The product uses 5/8-24 threads and is compatible with common .900-24 Plan-B-pattern adapters, including the Comstock LPA, Q Plan-B and Rearden Atlas. Its brake geometry is designed to reduce recoil and to act as a sacrificial first surface ahead of the suppressor blast baffle. Because the body is rotationally symmetrical, it does not need to be timed with shims, simplifying installation and keeping the suppressor interface consistent. Ready to complete your suppressor-mounting setup? Review fitment, confirm compatibility and add the Comstock Compact 45 Cal Muzzle Brake to your cart at BattleHawk Armory. Recoil Control and Blast-Baffle Protection A Plan-B-compatible brake can improve control during unsuppressed fire while helping shield a suppressor's blast baffle during suppressed use. The compact design keeps added length manageable, and the stainless-steel body provides a durable mounting foundation for repeated attachment and removal. Key Features and Specifications Model: MBC-58-45 Primary thread/interface: 5/8-24 Material: 17-4 PH stainless steel Finish: black nitride Weight: 1.5 oz Overall profile: 1.6 in Added system length: 0.97 in Installation interface: 13/16 in wrench flats Caliber/bore guidance: .45-caliber applications, including compatible .45 ACP, .450 Bushmaster and .458 SOCOM systems Mounting compatibility: common .900-24 Plan-B-pattern adapters, including the Comstock LPA, Q Plan-B and Rearden Atlas Fitment and Installation Guidance Standard 5/8-24 barrel threads; verify bore, shoulder and suppressor clearance before use. Before attaching any suppressor, verify bullet stability and confirm that the muzzle device, adapter and suppressor are concentric. Use an appropriate alignment rod and follow the current installation instructions supplied by Comstock Armory. Some suppressor manufacturers limit warranty coverage when aftermarket mounts or muzzle devices are used, so review the suppressor manufacturer's warranty and compatibility requirements before installation. Get yours today at BattleHawk Armory. Choose the correct configuration, verify your complete system and purchase the Comstock Compact 45 Cal Muzzle Brake from a trusted online retailer. Frequently Asked Questions What mounting system is the MBC-58-45 designed for? It is designed around the Plan-B-pattern ecosystem and the specific 5/8-24 interface listed above. Compatibility depends on the complete suppressor, adapter, muzzle-device and barrel configuration. Does this muzzle brake require timing? No. Comstock designed the brake to be rotationally symmetrical, so timing shims are not required. Install it only according to the manufacturer's instructions. How do I confirm suppressor fitment before firing? Check every thread specification, available blast-chamber depth, muzzle-device length and caliber rating. After installation, verify alignment with a proper alignment rod and follow all firearm, ammunition and suppressor manufacturer instructions. Use only on a compatible firearm and suppressor system. Installation should be performed by a qualified person when the user is not fully familiar with muzzle-device or suppressor-mount installation. Product Identification Manufacturer SKU: MBC-58-45UPC: 850069580414 Shop the Comstock Armory MBC-58-45 at BattleHawk Armory.