Dead Air KeyMo Muzzle Brake | .338 Cal | M18x1.5

The Dead Air KeyMo muzzle brake is a threaded muzzle device for .338-caliber rifles that also serves as the mounting interface for KeyMo-compatible suppressors. It is produced from 4140 HT alloy steel and finished in black nitride. The brake uses an M18x1.5 thread pattern to accept KeyMo or Sandman-series suppressors for quick attachment and removal without carbon-locking. Typical applications include precision long-range shooting and competition where reliable, repeatable suppressor attachment is needed.

Product Specifications

• The material is 4140 HT Alloy Steel.
• The finish is Black Nitride.
• The model designation is KeyMo.
• The thread pattern is M18X1.5.
• The threads are specified as M18X1.5mm.
• The compatible caliber is .338 Caliber.
• The listed weight is 0.275.
• The part supports quick attachment and removal of KeyMo-equipped and Sandman-series suppressors without carbon-locking.
• The unit is intended as a muzzle brake and suppressor mounting device for .338-caliber rifles.
• The manufacturer style designation includes DA106.
• The UPC is 810128160421.

Built around service-grade steel and a durable nitride finish, this KeyMo muzzle brake gives shooters a straightforward way to mount KeyMo-compatible suppressors while retaining the mechanical benefits of a brake. Its design focuses on repeatable alignment and ease of removal, making it a practical choice for precision and competitive use on .338-caliber platforms.