The Dead Air KeyMount Muzzle Brake (brand part number DA102) is a Black Steel muzzle device threaded 5/8-24 that doubles as the quick-attach base for a Dead Air Sandman-L or Sandman-S suppressor. At 2.60 inches overall, it is built for 7.62x51mm and 5.56x45mm threaded barrels, giving shooters one muzzle device that works whether they are ready to run suppressed or not. Even without a can attached, it is one of the finest brakes on the market, delivering a flatter-shooting rifle with minimal concussion compared to traditional muzzle brakes. When it is time to add a suppressor, the KeyMount system lets you attach a Sandman-L or Sandman-S in seconds.

Key Specifications

• Threaded 5/8-24 to fit standard .308/7.62mm AR-pattern barrels.
• Measures 2.60 inches overall length.
• Rated for 7.62x51mm and 5.56x45mm threaded barrels.
• KeyMount quick-attach system mounts a Dead Air Sandman-L or Sandman-S suppressor in seconds.
• Machined from steel for long-term durability under repeated suppressor mounting.
• Finished in black to match most AR builds.
• Reduces felt recoil and concussion more than a traditional muzzle brake, even unsuppressed.
• Works as a standalone brake if you are not ready to add a suppressor yet.
• Weighs approximately 0.3 lb, adding minimal mass to the muzzle.

Frequently Asked Questions

What suppressors does this mount fit? It is built for the Dead Air Sandman-L and Sandman-S via the KeyMount quick-attach system.

Do I need a suppressor to use it? No, it functions as a standalone precision brake, reducing recoil and concussion even without a can attached.

What thread pattern does it use? Standard 5/8-24, fitting most .308/7.62mm AR-platform barrels.

Buy the Dead Air KeyMount Muzzle Brake

Get a top-tier brake today and a seconds-fast suppressor mount when you are ready. Order it from our Class 3 parts and accessories selection at our Lubbock, Texas gun shop for fast, direct shipping.