The AAC Advanced Armament Company 64133 Blackout Muzzle Brake for 30 Caliber with 5/8"-24 threads delivers proven recoil reduction and improved muzzle control, crafted from high strength aerospace steel and finished in a durable SCARmor coating for enhanced corrosion resistance. This muzzle brake is designed specifically for use with the AAC MK13-SD suppressor system, delivering optimized alignment and performance when paired with the MK13-SD/300-SD configurations. Included Rocksett and shim kit provide the precise installation options needed to ensure a secure fit and dependable operation under demanding field conditions. Precision machined and designed to maintain accuracy during rapid-fire applications, the Blackout brake temperatures stay manageable, helping preserve shot-to-shot consistency in high-volume rifle use. Whether stalking, long-range engagement, or precision shooting, this brakes efficient gas redirection and controlled muzzle rise assist shooters in maintaining target acquisition and follow-up shot speed. Built for reliability in rugged environments, it pairs seamlessly with AACs suppression ecosystem while delivering the robust, durable performance expected from Advanced Armament Company products.