The Advanced Armament Corp MK13-SD provides excellent Recoil reduction. It is constructed from an aerospace grade heat treated 17-4 stainless steel and is nitride coated for high surface hardness and durability. In addition to all the features that this muzzle brake offers, it provides you with the added benefit of being able to attach your suppressors quickly using the Ratchet Mount system.
Specifications and features:
Advanced Armament Corp MK13-SD 90T Muzzle Brake 101858
7.62mm caliber barrels threaded in Metric 18x1.5 TPI
90 Tooth Ratchet mount for AAC MK13-SD sound suppressors Only
Package includes shim and Rocksett for Installation