The AAC 90T Ratchet Taper Muzzle Brake mounts are for the SR-7 and SR-5 suppressor line. All AAC Blackout muzzle brakes are machined from high strength aerospace steel alloy and coated in a hard, durable, corrosion resistant SCARmor finish.
Specifications:
- 5.56mm-1/2x28 SR Series Only
- Rocksett and Shim Kit Included
- Not Compatible with Older Spring Mount (18-Tooth) or Ratchet Mount (51-Tooth) Sound Suppressors