You can find the Dead Air Armament Keymount Muzzle Brake 7.62 5/8x24 here. Fast $9.95 shipping! Orders over $200 ship for free!

The Dead Air Armament Keymount Muzzle Brake features the KeyMount quick attach system for your Sandman-L, Sandman-S, Sandman-K, or KeyMo equipped Nomad-30 suppressor. When shooting unsuppressed you can still employ the finest brake on the market and experience a flatter shooting rifle with minimal concussion compared to traditional muzzle brakes.

Caliber: .308/7.62
Length: 2.6"
Threads: 5/8x24