Description
The 13.7 inch barrel has become one of the most popular lengths for compact AR builds, and this XL version of the HUXWRX Flash Hider-QD was made specifically with those rifles in mind. The device measures 2.96 inches long and adds 2.34 inches to the barrel, which takes a 13.7 inch barrel with 0.6 inch threads out to 16 inches overall. It also works on 13.9 inch barrels, landing you at 16.2 inches. HUXWRX pre-drills the device to make the pin and weld process quick and painless for your gunsmith, which is a small detail that saves real time and hassle on the bench.
More Than a Flash Hider
When you are running unsuppressed, the prong design does a solid job knocking down visible flash on .223 and 5.56 loads, keeping your sight picture cleaner in low light. But the real draw here is the external QD interface. This mount is compatible with the full HX-QD series, including the 556k, 556, 762, 762 Ti, and Magnum Ti, plus FLOW series cans like the 556k, 6k, and 762 Ti. If you shoot a VENTUM series suppressor, you can still run this device by adding the HUX HUB-Adapter. One thing worth knowing: smaller caliber mounts work with larger caliber suppressors, but not the other way around, so this 5.56 mount plays nicely with 7.62 cans too.
Torque Lock Keeps the HUXWRX Flash Hider-QD Planted
HUXWRX builds their Torque Lock technology into this mount, which means the device self-tightens against the muzzle as you shoot instead of working loose over time. That translates to consistent suppressor alignment and repeatable point of impact when you attach and detach your can. Threaded 1/2×28 with a black finish, it blends right in on just about any 5.56 build. If you have been eyeing a shorter rifle setup and already own or plan to own a HUXWRX suppressor, this is the muzzle device that ties the whole package together.
Key Specifications
- Manufacturer: HUXWRX Safety Company
- Model: Flash Hider-QD 556 XL
- Manufacturer Part Number: 2885
- UPC: 706433764181
- Caliber: .223 Rem / 5.56 NATO
- Thread Pitch: 1/2×28
- Muzzle Device Length: 2.96 in
- Length Added to Barrel: 2.34 in
- Intended Barrel Length: 13.7" (16" OAL) or 13.9" (16.2" OAL)
- Suppressor Compatibility: HX-QD 556k, 556, 762, 762 Ti, Magnum Ti; FLOW 556k, 6k, 762 Ti
- VENTUM Compatibility: Yes, with HUX HUB-Adapter
- Pin and Weld: Pre-drilled for pin and weld
- Color: Black
- Product Type: Flash Hider / QD Suppressor Mount
What’s Included
- HUXWRX Flash Hider-QD 556 1/2×28 XL muzzle device
Frequently Asked Questions
Will the HUXWRX Flash Hider-QD XL bring my 13.7 inch barrel to 16 inches?
Yes, that is exactly what this XL version was designed for. It adds 2.34 inches to the barrel, which takes a 13.7 inch barrel with 0.6 inch thread length to 16 inches overall once pinned and welded. It also works on 13.9 inch barrels, bringing them to 16.2 inches.
Which suppressors mount to this flash hider?
The Flash Hider-QD 556 works with the HX-QD series, including the 556k, 556, 762, 762 Ti, and Magnum Ti, as well as FLOW series cans like the 556k, 6k, and 762 Ti. VENTUM series suppressors will also mount up if you add the HUX HUB-Adapter. Since this is a 5.56 mount, it pairs with larger caliber HUXWRX suppressors too.
Is this device pre-drilled for pin and weld?
It is. HUXWRX drills the device at the factory so your gunsmith can pin and weld it without extra prep work. That makes permanent installation faster and cleaner than starting from a blank muzzle device.
What keeps the Flash Hider-QD from loosening up during shooting?
HUXWRX builds Torque Lock technology into this device, which causes it to self-tighten against the muzzle with each round fired rather than backing off. That keeps the mount solid and helps your suppressor return to the same position every time you attach it, which matters for consistent point of impact.







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