Dead Air DA104 KeyMo Muzzle Brake | .338 Cal | M18x1

The Dead Air DA104 KeyMo Muzzle Brake is a threaded muzzle device engineered to interface with KeyMo mounts and compatible suppressors. Machined from 4140 HT alloy steel and finished in black nitride, it provides a durable M18x1 thread interface for .338-caliber rifles. The device is intended to reduce recoil impulse and improve shootability when used on precision or field rifles. Typical applications include precision long-range shooting and big-game hunting.

Product Specifications

• The manufacturer is Dead Air Armament LLC.
• The model is KeyMo.
• The manufacturer’s part number is DA104.
• The product is specified for use with .338 caliber rifles.
• The thread pattern is M18x1.
• The material is 4140 HT Alloy Steel.
• The finish is Black Nitride.
• The product is designed to attach KeyMo-equipped suppressors or mounts for quick mount/dismount operation.
• The listed weight is 0.26.
• The UPC is 810128160414.

Compact and purpose-built, the DA104 KeyMo muzzle brake provides a robust mounting interface for KeyMo-compatible suppressors while delivering the handling improvements expected from a well-designed brake. Its alloy steel construction and nitride finish offer corrosion resistance and durability for repeated mounting cycles, making it suitable for field use and precision applications.

Owners commonly report that the device produces a flatter shooting rifle with reduced concussion compared to traditional brakes, and that suppressors remove easily without carbon-locking when used with the KeyMo interface.

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