Advanced Armament Corp. Blackout Muzzle Brake 51-Tooth Suppressor Mount - 5/8x24

Manufactured by Advanced Armament Corp
SKU: 102320
MPN: 64178
Manufactured by Advanced Armament Corp
3 Reviews

Out of Stock

NOTE: Limit 5 per household. Quantities exceeding 5 will not allow checkout.



This AAC Blackout AR-10 / LR-308 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.
See More


BrandAdvanced Armament Corp.
Manufacturer.Advanced Armament Corp
MaterialSteel - 17-4 PH Stainless
Suppressor MountAAC 51T Ratchet Mount
Thread Pattern5/8 X 24
TypeMuzzle Brake

WARNING: Discharging firearms in poorly ventilated areas, cleaning firearms or handling ammunition may result in exposure to lead and other substances known to the State of California to cause birth defects, reproductive harm and other serious physical injury. Have adequate ventilation at all times. Wash hands thoroughly after exposures. For more information, see

Ratings & Reviews

3 reviews

  • 4 stars
  • 0 reviews
  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

Best break on the market


Advanced Armament need I say more..PA has the best customer service and fastest shipping on the web! Thanks primary arms!

Muzzle brake ratchet


Great break planning on adding more to other guns.

Great muzzle brake


This is an excellent brake. The only complaint I have is with the shims. They give you enough shims, but they're all in even number thicknesses. So in my case it was hard to get the brake perfectly set up with the correct torque because I needed .019 of thickness the get it perfectly level and there's no way to get an odd number thickness so I had to under-torque it.Beyond that it's a great brake. Works extremely well and the suppressor attachment is nice and robust.