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Dead Air KeyMount Muzzle Brake - 1/2x28

Dead Air Armament

MSRP: $89.00
Our Price: $79.00
(You save $10.00 )
(4 reviews) Write a Review

Out of Stock

The Dead Air Keymount muzzle brake is your gateway to silence. When you’re ready for peace and quiet use the Keymount brake to quickly attach your Sandman-L™, Sandman-S™, or Sandman-K™ to your rifle. If you’re not quite ready to turn up the silence, you can still employ the finest brake on the market and experience a flatter shooting rifle with minimal concussion compared to traditional muzzle brakes.

Note from Phillip: I've measured the overall length of these muzzle brakes, and they're long enough to permanently attach to most 13.7" barrels to reach legal 16" length! If you're looking for an excellent muzzle device for your 13.7" barreled build that is also a suppressor mount, we cannot recommend this Dead Air Muzzle Device enough. Click here for more muzzle devices that will bring a 13.7" barrel to legal length after being permanently attached. 


  • Compatibility
    • Dead Air Sandman-L
    • Dead Air Sandman-S
    • Dead Air Sandman-K
    • Any Suppressor fitted with a Key-Mo Adapter
  • 1/2x28 Thread Pitch
  • .30 Cal Aperture
  • Shim Kit Included
  • Pre-Drilled for Pin and Welding
  • 4.3oz Weight
  • 2.825" approx OAL
    • Will work to bring most 13.7" barrel to 16" after P/W

4 Reviews Hide Reviews Show Reviews

  • 5
    Dead air muzzle break

    Posted by Joey Piparato on Dec 30th 2023

    Always in stock, it's slide to 10$ cheaper then the closest competitor and always shows up with a written note and STICKERS! Will continue to order from this company, I've had nothing but good experiences

  • 5
    Dead air key mount muzzle brake

    Posted by Scott Mack on Oct 24th 2023

    Pin and weld job was done very well

  • 5
    Very impressed!

    Posted by Matt on Dec 27th 2022

    Brake operates beautifully and the Keymo system is revolutionary.

  • 5
    DA Brake

    Posted by Andrew on Jan 12th 2022

    I love ordering from Bexar because they always have the inventory numbers correct. Just what I needed at a good price. The service is one where I would pay more just because I know that my order will be perfect.

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