This AAC Blackout AR-15 Muzzle Brake is a highly efficient and effective brake designed to significantly reduce recoil and help keep shooters on target for faster shot-to-shot recovery. All Blackout muzzle brakes are machined from high strength aerospace 17-4 stainless steel alloy and coated in a hard durable corrosion resistant SCARmor finish. This 51T Blackout muzzle brake works in conjunction with AAC's improved ratchet mount sound suppressors. The 51-T mount is an intuitive lightning fast silencer attachment/detachment system that allows for secure installation of a suppressor in less than 3 seconds with no tools or moving parts. Not compatible with the older spring mount (18-Tooth) or newer ratchet taper mount (90-Tooth) sound suppressors Caliber: 22 Cal/5.56mm - Thread Pitch: 1/2-28 - Common Firearm Use: AR-15 Bushmaster ACR - Finish: SCARmor - Silencer Mount: 51T Ratchet Mount - AAC Silencer Compatibility: ACR-SD 416-SD 249-SD Post-2007 M4-2000 Mini 4 Post-Mid 2010 7.62-SD 7.62-SDN6 Mini 7
