The Muzzlok 8.6 Blackout 3-Port Muzzle Brake is precision engineered for 8.6 Blackout caliber firearms with M18X1.5 threading and features a durable black finish.Muzzlok 8.6 Blackout 3-Port Muzzle BrakeM18X1.5 thread specification for secure attachment3-port design for effective recoil reductionBlack finish for corrosion resistance and aestheticsCaliber-specific design optimized for 8.6 BlackoutDesigned to reduce felt recoil and muzzle rise this muzzle brake enhances shooting accuracy and control for competitive shooters and firearms enthusiasts using 8.6 Blackout chambered rifles.