The Dead Air XEMAX Muzzle Brake 5/8-24 (brand part no. DA150) is a single-port muzzle brake in the Dead Air XEMAX line, cut to 5/8-24 threads. XEMAX is the Xeno mounting technology made bigger for big-bore rifles. Used on its own, the single-port design vectors gas outward and upward, which minimizes ground dust dispersion and reduces felt recoil. Dead Air also built it as the muzzle side of the XEMAX suppressor mount, and it works with the XEMAX Adapter on a Primal or Nomax 33 silencer.

Key Specifications

• The thread pattern is 5/8-24, so confirm your barrel matches before you order.
• Dead Air’s caliber rating for this part is .338 Lapua Mag, .338-378 Wby Mag, 33XC and 8.6 Blackout, which sets the cartridges it is intended for.
• Weight is 3.40 ounces, a modest load on the end of the barrel for a big-bore brake.
• Length is 2.06 inches, the XEMAX brake length Dead Air publishes.
• Diameter is 1.125 inches, as listed by Dead Air for the XEMAX brake.
• The single-port design vectors gas outward and upward, which cuts ground dust and felt recoil.
• It requires timing, and Dead Air supplies the appropriate shims with the brake to do it.
• It is the muzzle half of the XEMAX mounting system and mates with the XEMAX Adapter on the suppressor.
• It is used with the Nomax 33 silencer, and with Primal silencers fitted with the XEMAX adapter.
• Xeno and XEMAX parts are not cross-compatible, so this brake pairs only with the XEMAX adapter.

Frequently Asked Questions

What thread is this XEMAX brake? Dead Air lists this brake at 5/8-24 thread pitch, rated for .338 Lapua Mag, .338-378 Wby Mag, 33XC and 8.6 Blackout.

Does the XEMAX brake need shims? Yes. All XEMAX muzzle brakes require timing and come with the appropriate shims to do it.

Can I use this brake with a Xeno adapter? No. Xeno and XEMAX muzzle devices and adapters are not cross-compatible, so this brake pairs with the XEMAX Adapter.

Buy the Dead Air XEMAX Muzzle Brake, 5/8-24, .338 Caliber

Pick the XEMAX brake by thread first, then confirm the caliber rating. Order it from our Lubbock, Texas shop for fast, direct shipping, and browse more in our Class 3 parts and accessories.