Dead Air XEMAX Muzzle Brake | .338 | M18x1.5 | DA154

The Dead Air XEMAX muzzle brake adapts Dead Air’s Xeno Mounting Technology to large-bore rifle calibers. It is designed for .338-caliber rifles with M18x1.5 right-hand threads and is finished in nitride over an alloy steel body. The device is supplied with timing shims and requires timing during installation to achieve proper alignment and function.

Typical applications include long-range precision shooting from bolt-action platforms and use with large-bore suppressors for reduced muzzle impulse and managed gas flow during field or competition shooting.

Product Specifications

• The manufacturer is Dead Air Armament LLC.
• The model is listed as XEMAX.
• The manufacturer’s part number is DA154.
• The thread pattern is M18X1.5.
• The NFA thread pattern is 18×1.5mm RH.
• The caliber/gauge is listed as .338 Caliber.
• The color is Black.
• The finish is Nitride.
• The product type is Muzzle Brake.
• The material is Alloy Steel.
• The product is supplied with timing shims and requires timing for installation.
• The item is listed as not disassemblable for user service.
• The subcategory is Muzzle Devices.
• The UPC is 810128161398.

The XEMAX brake is a purpose-built muzzle device for large-bore systems where concentric alignment and repeatable interface with suppressors matter. Its single-port geometry manages gas direction when used as a standalone brake, and when paired with compatible Dead Air adapters or Nomax/Primal silencers it is intended to provide consistent mounting and service life benefits. The included shims allow the installer to time the device precisely to the bore for best results.