Dead Air KeyMo Muzzle Brake | 5/8-32 | Nitride

The Dead Air KeyMo muzzle brake is a quick-attach muzzle device engineered to interface with KeyMo-compatible silencers. It features a KeyMo mounting profile and a corrosion-resistant black nitride finish for long service life. The design aims to manage gas distribution when used with compatible silencers and to allow reliable, tool-free removal without carbon locking. Applications include suppressed precision target work and big-bore field use where a robust quick-attach mount is required.

Product Specifications

• The model is KeyMo.
• This product is a muzzle brake designed for KeyMo mounting.
• The thread pattern is 5/8-32.
• The NFA thread pattern is listed as 5/8X32.
• The material is listed as 4140 HT chromium-molybdenum heat-treated steel.
• The finish is specified as black nitride.
• The color is listed as Black.
• The manufacturer states compatibility with KeyMo-equipped silencers and indicates it can handle calibers up to .458.
• The mount’s seating design requires no shims for proper installation on compatible barrels.
• The listed weight is 0.25.
• The package width is 4.5, package length is 5.8, and package height is 1.0.
• An additional listed feature is .45 Caliber Rifle Muzzle Brake.
• The threads are listed as 5/8-32.
• The UPC is 810128161565.

This KeyMo muzzle brake combines rugged materials and a quick-attach interface to simplify suppressed shooting setups. Its design focuses on reliable mounting, predictable gas distribution inside compatible silencers, and durable finishes for long-term use. For shooters building a suppressed rifle using KeyMo-equipped adapters, this device serves as a practical mounting solution while also providing the functional characteristics of a muzzle brake.