Dead Air Keymount Muzzle Brake

The Dead Air KeyMount Muzzle Brake is a precision engineered muzzle device that serves as both a high-performance brake and the quick-attach interface for Dead Air KeyMo-compatible suppressors. Machined from 4140 heat treated alloy steel and finished in black nitride, it is built for durability and corrosion resistance under heavy use.

Designed for 1/2-28 or 5/8×24 threaded barrels, it is bored for .30 caliber  and measures approximately 2.82″ overall with a weight of about 4.4 oz. Its tapered KeyMo mating surface and sealed profile help prevent carbon locking, provide rock-solid repeatable alignment, and allow fast on/off suppressor mounting. It also features a pre-drilled hole for optional pin and weld installation to ensure permanent attachment when required.

Functionally, the KeyMount brake flattens recoil and reduces muzzle rise when shooting unsuppressed, while enabling instant transition to a suppressed setup when paired with a KeyMo-equipped suppressor. It is an ideal choice for users who want a single muzzle device that optimizes both suppressed and unsuppressed performance.

Key Features & Specifications

• Model: DA101 KeyMount Muzzle Brake

• Thread pitch: 1/2-28 (standard AR/5.56 thread) or 5/8×24

• Bore: .30 caliber

• Material: 4140 HT alloy steel

• Finish: Black nitride

• Overall length: ~2.82″

• Weight: ~4.42 oz

• Mounting: KeyMo tapered interface for quick detach suppressors; pre-drilled for pin and weld (model dependent)

• Primary benefits: Reduced felt recoil, reduced muzzle rise, repeatable suppressor alignment, prevents carbon lock