The American Precision Arms Fat Maxx Muzzle Brake delivers industry-leading recoil reduction engineered specifically for large-bore, high-volume precision rifles. Utilizing a massive five-port design with unique gas-reversing geometry, it significantly mitigates backward recoil forces and keeps the muzzle flat for instant follow-up tracking. The proprietary self-timing nut system allows shooters to effortlessly install, align, and torque the brake at home without the need for crush washers, peel washers, or professional gunsmith timing. Machined from high-grade stainless steel, this robust brake features a 1.225-inch outer diameter designed to integrate cleanly with heavy-contour match barrels. The precise internal bore clearance is optimized to manage gas pressures safely for both 7mm and .30 caliber projectiles without sacrificing accuracy or stability. American Precision Arms Fat Maxx 4.3" Long 1.225" Diameter 11 oz 3/4x24 / .30 / 7mm / Stainless Self-Timing Muzzle Brake FMX3430S