Dead Air Armament Direct Thread Brake Mount HUB Compatible .22 Cal 1/2X28 Thread Pitch Nitride Finish Black. By optimizing gas flow into the blast chambers it minimizes focused erosion on the baffles extending suppressor lifespan and maximizing sound suppression. The DTB excels both as a high-performance muzzle brake and as a precision-engineered direct thread adapter. Specifications for Dead Air Silencers Direct Thread Brake Mount HUB Compatible: Manufacturer: Dead Air Silencers Color: Black Finish: Nitride Black Additional Features: Mount Case Finish: Nitride Handle Color: Black Blade Finish: Nitride Features of Dead Air Silencers Direct Thread Brake Mount HUB Compatible: Stainless Steel Construction Package Contents: Dead Air Silencers Direct Thread Brake Mount HUB Compatible