Advanced Armament 64133: Blackout Muzzle Brake 90-Tooth Ratchet Suppressor Mount 7.62mm

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The AAC Blackout 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 90-Tooth Blackout muzzle brake works in conjunction with AAC's Non-Tapering Ratchet Mount designed specifically for use with the MK13-SD Silencer. The new 90T gear on the brake interfaces with a spring-biased ratchet lever on the suppressor to eliminate the potential for the silencer to inadvertently unthread during firing, while a finer pitch external ACME thread snugs it up securely to create a rock-solid platform. 


  • Caliber: 30 Cal/7.62mm
  • Thread Pitch: 5/8"-24
  • Common Firearm Use: Bolt Action 7.62mm or 300 Win Mag, M2010
  • Length: 2.25"
  • Weight: 2.4 oz
  • Finish: SCARmor
  • Silencer Mount: 90-T Ratchet Mount

AAC Silencer Compatibility:

  • MK13-SD

NOTE: This brake is designed specifically for use with AAC's MK13-SD Silencers, and is NOT compatible with other 90-Tooth Silencers such as the SR5 or SR7.