Armaspec Catacomb Micro Muzzle Brake Features The Armaspec Catacomb Micro Muzzle Brake uses a precision taper combined with external threading to create a secure repeatable mounting interface compatible with Atlas/Plan B suppressor mounts. This minimalist mounting approach keeps consistent alignment and retention without relying on bulky locking collars or additional moving parts that could fail under the stress of repeated firing. Built for 30 caliber rifles the brake threads onto a 5/8x24 pattern a widely used thread spec for many common 30 caliber barrel profiles. By eliminating unnecessary bulk and complexity the design keeps the muzzle device compact and lightweight at the end of the barrel. A QPQ nitride finish gives the Catacomb a hard corrosion-resistant black surface that holds up under the heat and fouling generated by muzzle brake function. As a muzzle brake it is designed to redirect propellant gas to help reduce felt recoil and muzzle rise during rapid strings of fire. The reliable low-maintenance mounting interface simplifies swapping a suppressor on and off without extra tools or hardware. For 30 caliber rifle owners wanting a dependable brake with built-in suppressor mounting compatibility the Armaspec Catacomb is available for sale at GrabAGun. Armaspec Catacomb Micro Muzzle Brake Specifications Manufacturer: Armaspec Model: Micro Muzzle Brake Series: Catacomb Caliber: .30 Caliber Color: Black Finish: QPQ Nitride Thread Pattern: 5/8x24 Available At: GrabAGun