Faxon MuzzLok Plan B Muzzle Brake M18x1.5 .338 - Muzzle Device

Recoil reduction and suppressor compatibility on the same timed mount. The Faxon MuzzLok Plan B Muzzle Brake threads onto M18x1.5-threaded metric, 8.6 Blackout, and magnum barrels and locks with a left-hand MuzzLok timing nut, delivering felt recoil reduction and muzzle rise control in a package that installs and reinstalls at the same orientation every time — no crush washers, no shims.

The Faxon MuzzLok Plan B Muzzle Brake is a .338-inch-bore muzzle device machined from 17-4 PH stainless steel (H1025) with a nitride finish, designed for M18x1.5-threaded barrels and configured for direct integration with the Plan B suppressor ecosystem.

Four features define the MuzzLok system's advantage over conventional timed muzzle devices. The left-hand MuzzLok timing nut eliminates crush washers and timing shims — thread the brake to the desired orientation, lock the nut, and the position holds repeatably through removal and reinstallation. The Plan B interface thread (29/32-24 UNEF-2A) accepts a Plan B to HUB adapter for direct compatibility with 1.375-24 HUB-mount suppressors including the Faxon HARMONIX and CORESYNC when configured appropriately. 17-4 PH stainless steel (H1025 heat treat) provides the hardness and corrosion resistance needed at a muzzle device that sees repeated mounting cycles and muzzle blast. Efficient port geometry reduces felt recoil and muzzle rise, keeping the rifle on target faster for follow-up shots without requiring a trade-off between brake performance and suppressor compatibility.

Compatible with .338" bore diameter and smaller. Requires a Plan B to HUB adapter for use with 1.375-24 HUB-mount suppressors. Minimum 20 ft-lbs final lockup torque.

17-4 PH stainless steel (H1025), nitride finish. M18x1.5 muzzle thread. Plan B interface thread: 29/32-24 UNEF-2A.

Built for precision rifles, duty AR platforms, PCCs, and any M18x1.5-threaded build that needs both effective recoil reduction and a repeatable, suppressor-ready timed mount.

By Faxon Firearms. Made in the USA. Includes muzzle brake, left-hand timing nut, and installation instructions. Standard Faxon warranty applies.