The Dead Air KeyMount Micro Brake (MPN DA109) is a compact muzzle brake threaded 1/2-28 that serves as the mounting interface for Dead Air’s KeyMount suppressor line.

Key Specifications

• Threaded 1/2-28 for standard 5.56/.223-pattern muzzle devices
• Built as a Dead Air KeyMount-compatible mounting brake
• Low-profile design keeps overall length minimal when a suppressor is not attached
• Manufactured by Dead Air Silencers, a Class 3 accessory specialist

Frequently Asked Questions

Is this brake a suppressor?
No. It is a muzzle-mount accessory that lets a Dead Air KeyMount suppressor attach to and detach from your barrel; the brake itself is not an NFA item.

What thread pitch does it use?
1/2-28, the standard thread pitch for most 5.56/.223-caliber AR-pattern rifles.

Is this item currently available to ship?
Availability changes with supplier inventory; contact us to confirm current status before you order.

Buy the Dead Air KeyMount Micro Brake

Set up your barrel for quick-detach suppressor mounting with this KeyMount brake from Dead Air Silencers. Order from a Lubbock, TX gun shop, part of our Class 3 parts and accessories lineup.