Faxon Muzzlok Stainless Steel Plan B Flash Hider | 1/2×28 | .250″ Bore

The Faxon MuzzLok Stainless Steel Plan B Flash Hider in 1/2×28 with a .250 inch bore delivers effective muzzle flash suppression and quick-mount suppressor capability in one streamlined design. Built entirely in the U.S.A., this Faxon MuzzLok stainless steel device combines Faxon’s premium machining, stainless steel strength, and the patented MuzzLok system for tool-free installation and repeatable alignment. The 1/2×28 thread pattern and .250 inch bore make it ideal for .223 Wylde, .223 Remington, and 5.56 NATO barrels. Outpost Firearms stocks it for AR-15 builders.

What the Faxon MuzzLok Stainless Steel System Changes

Anyone who has installed a muzzle device the traditional way knows the frustration. You shim it, you check the timing, you take it off, you add a washer, you crush the washer slightly too far, and you start again. Every removal for cleaning means repeating the process and hoping it goes back the same way.

Faxon’s patented MuzzLok system allows simple hand-tight installation with precise timing, with no need for shims or crush washers. Once positioned, the locking collar secures the device firmly, ensuring perfect alignment and consistent suppressor fit. That eliminates installation guesswork and provides repeatable performance after every cleaning or swap.

Features

• Patented MuzzLok system for tool-free installation with no shims or crush washers
• Locking collar that secures the device and guarantees repeatable alignment
• Stainless steel construction for strength and heat resistance at the muzzle
• 1/2×28 threads with a .250 inch bore, suited to .223 Wylde, .223 Remington, and 5.56 NATO
• Flash hiding geometry that cuts visible muzzle signature
• Built entirely in the U.S.A. to Faxon’s machining standards

Flash Suppression and Suppressor Readiness

Flash hiding is not cosmetic. Unburned powder igniting at the muzzle produces a bright bloom that destroys your night vision instantly, and in low light that means losing sight of everything you were looking at. A flash hider disrupts and cools those gases so the flash is broken up rather than concentrated.

The Plan B designation refers to the device doubling as a suppressor mount. Being able to hand tighten a mount and know it is aligned every time matters enormously when you are running a can, because a misaligned mount is how baffle strikes happen. Repeatable alignment is a safety feature, not just a convenience.

Stainless steel is the right material for a suppressor mounting surface. It handles the heat cycling that comes with sustained fire under a can, resists the corrosion that suppressor residue promotes, and holds thread and shoulder geometry precisely over a long service life.

Installation, Compatibility, and Care

Check your thread pitch before ordering. 1/2×28 is the standard for .223 and 5.56 barrels, while .30 caliber AR barrels typically use 5/8×24, and fitting the wrong device is not something you can improvise around. The .250 inch bore here is sized for the smaller calibers.

Install by hand, time the device, and secure the locking collar as directed. There is no torque wrench and no armorer’s wrench in this process, which is the entire point. Confirm the device is tight and correctly indexed before firing, and recheck after your first range session.

Cleaning is straightforward but should be regular. Carbon accumulates quickly around any muzzle device, and it accumulates faster under a suppressor. Soak and brush the device, pay attention to the locking collar threads so carbon does not seize them, and avoid aggressive abrasives on the stainless surfaces. Our parts and upgrades category stocks the cleaning supplies and related components, and Faxon documents the MuzzLok system in detail.

A Smarter Muzzle Device

Between the flash reduction, the suppressor mounting, and the removal of shims from your life entirely, the Faxon MuzzLok stainless steel Plan B is one of the more genuinely useful small upgrades on an AR-15. It is the sort of part you install once and then stop thinking about, which is exactly what you want from hardware at the business end of a rifle. Ships direct to your door, no FFL required.