The AAC BlackOut Muzzle Brake, 90T, 7.62MM. This highly effective muzzle brake is compatible with the AAC Mk13-SD 90T sound suppressor. All AAC Blackout muzzle brakes are machined from high strength aerospace steel alloy and coated in a hard, durable, corrosion resistant SCARmor finish.

Not compatible with any other silencer outside of the MK13-SD/300-SD.

Rocksett and shim kit included.