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 heavy-hitting .338 caliber projectiles without sacrificing accuracy or stability. American Precision Arms Fat Maxx 4.3" Long 1.225" Diameter 11 oz 5/8x24 / .338 / Stainless Self-Timing Muzzle Brake FMX5838S