The Faxon Stainless Steel Direct Thread to Hub Adapter in 1/2 by 28 lets you connect any standard 1.375 by 24 TPI HUB compatible suppressor to a barrel threaded 1/2 by 28. That single sentence describes a part that solves one of the most annoying compatibility problems in the suppressor world. HUB has become the universal mounting standard on the can side, while 1/2 by 28 remains the universal thread on 5.56 barrels, and this adapter is the bridge. It is machined for precision alignment and built for long term durability.
What the Faxon Stainless Steel Direct Thread Adapter Does
The HUB standard, short for Hybrid Universal Bridge, exists so suppressor owners can change mounting systems without buying a new suppressor. The rear of the can is threaded 1.375 by 24, and you screw in whatever mount your host rifle requires.
This adapter is the direct thread option for that system. It threads into the suppressor’s HUB interface on one side and onto your 1/2 by 28 barrel threads on the other, giving you the simplest and most concentric mounting method available with no quick detach mechanism in the path.
It is ideal for .223 Wylde, .223 Remington, and 5.56 NATO AR-15 builds where reliable suppressor fit and secure thread engagement are critical.
Key Features
The value in the Faxon Stainless Steel Direct Thread to Hub Adapter comes from precision rather than complexity.
- Connects HUB compatible suppressors with 1.375 by 24 TPI threads to 1/2 by 28 barrels.
- CNC machined from stainless steel for strength at suppressor operating temperatures.
- Precision concentricity between barrel threads and suppressor bore for reliable alignment.
- QPQ nitride treatment providing superior corrosion resistance and smooth threading.
- Dark matte finish that blends with typical rifle and suppressor coatings.
- Direct thread design with no quick detach components to introduce play.
Specifications and Why Concentricity Matters
Faxon Stainless Steel Direct Thread adapter material is stainless steel with a QPQ nitride finish. Barrel side threading is 1/2 by 28. Suppressor side threading is 1.375 by 24 TPI, the HUB standard. Intended platforms include .223 Wylde, .223 Remington, and 5.56 NATO AR-15 builds.
Concentricity is the specification that keeps you safe. A suppressor mounted even slightly off axis risks a baffle strike, and every interface in the chain adds potential error. CNC machining to tight tolerances gives a solid, repeatable mounting surface that keeps the bore aligned.
The QPQ nitride treatment addresses the other classic problem, which is carbon lock. Suppressor mounts bake in carbon and heat, and threads that seize become a real chore to break loose. A smooth, hard, corrosion resistant surface makes removal far easier after high round counts.
Installation, Use, and Care
Install the adapter to the suppressor first, tighten it properly, and then thread the assembly onto the barrel. Always verify that the barrel shoulder and the adapter face meet squarely, since a crush washer or an improperly timed muzzle device left in place will throw off alignment.
Check tightness during a shooting session, particularly the first few times. Direct thread mounts can loosen under vibration, and a loosening suppressor is something you want to catch early rather than discover the hard way.
Use a high temperature anti seize on the threads and remove the suppressor while it is still warm rather than after it cools and locks. Clean carbon from the threads with a brush and solvent periodically. Suppressors themselves are regulated items handled through the appropriate federal process, while this adapter is simply a machined part. Find muzzle devices and barrel components in our parts and upgrades category.
Precise, durable, corrosion resistant, and machined by Faxon Firearms, this adapter is the clean way to run a HUB suppressor on a standard threaded barrel. Ships direct to your door, no FFL required.
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