Dead Air KeyMo Flash Hider | 1/2-28 | DA301

The Dead Air KeyMo Flash Hider (MFG# DA301) is a muzzle device designed to serve as a suppressor mounting interface while also functioning as a flash hider. Its patent-pending mass-shifted, equal-length tine design reduces the “ping” some mounts produce and provides a stable, repeatable mounting surface for KeyMo and KeyMicro-equipped suppressors. Constructed for durability, the part is finished in black nitride and fits 1/2-28 threaded muzzles. Typical uses include range and competition rifles and builds intended for suppressor integration.

Product Specifications

• The manufacturer is Dead Air Silencers (Dead Air Armament LLC).
• The model is the KeyMo Flash Hider.
• The manufacturer part number is DA301.
• The thread pattern is 1/2-28.
• The NFA thread pattern is 1/2×28.
• The material is 4140 HT alloy steel with a black nitride finish.
• The finish is Black (black nitride as stated in manufacturer description).
• The overall length is 2.70 inches as listed in manufacturer data.
• The weight is listed as 0.3 lb.
• The product type is listed as a Flash Hider / Suppressor Adapter.
• Compatibility is listed as KeyMo and KeyMicro-equipped suppressors including Sandman, Nomad-30, Primal, and Wolfman in manufacturer notes.
• The design features mass-shifted equal-length tines to reduce the audible “ping” seen with some mounts.
• The unit includes a pre-drilled pin-and-weld hole for attachment versatility, per manufacturer description.
• The package color is listed as Black.
• The UPC is 810128160438.

Built for shooters who need a durable, low-profile mount for suppressors, the KeyMo Flash Hider provides a repeatable interface and simplified removal without carbon-locking when used with compatible Dead Air adapters. Its machined steel construction and finish are intended for long-term service in range and competitive environments where reliable suppressor mounting and consistent muzzle configuration matter.

Owners commonly praise its effective reduction of “ping” with Dead Air suppressors and the ease of removing a suppressor without carbon-locking.