Huxwrx 1677 QD 556 Flash Hider Black with 1/2"-28 tpi Threads,2.30" OAL & 1.20" Diameter for 5.56x45mm NATO AR-Platform

The Huxwrx 1677 QD 5.56 flash hider is a quick-detach muzzle device built for AR-platform rifles chambered in 5.56x45mm NATO. If you run an unsuppressed setup and want to keep muzzle flash in check—especially in low-light shooting or tactical scenarios—this QD flash hider threads onto your barrel and pairs with compatible Huxwrx suppressors for a modular suppression system. The 1/2"-28 TPI threads are standard for 5.56 AR uppers, making installation straightforward on most modern builds.

What sets the Huxwrx approach apart is modularity. The 1677 QD accepts quick-detach suppressors from the HX-QD series (including the 556K, 556, 762, 762 Ti, and Magnum Ti) as well as FLOW series cans (556K and 762 Ti). If you own a VENTUM series suppressor, you'll need the HUX HUB Adapter to make it compatible. This flexibility means you can swap suppressors or run without one, all without tools.

Built in black and measuring 2.30 inches overall length with a 1.20-inch diameter, the 1677 sits compact on the muzzle while still delivering effective flash reduction. Huxwrx's reputation for quality suppressor platforms carries through their muzzle device lineup—this is the kind of piece that justifies the investment if you're serious about a modular suppressor rig.

Key Features

• Quick-detach interface compatible with HX-QD and FLOW series suppressors
• 1/2"-28 TPI threads — standard for 5.56 AR uppers
• Compact profile: 2.30" OAL, 1.20" diameter
• Effective unsuppressed flash mitigation for 5.56x45mm NATO
• Black finish
• Modular design for suppressor swapping without tools

Specifications

Frequently Asked Questions

Which suppressors work with the Huxwrx 1677 QD?

The 1677 is compatible with Huxwrx HX-QD series suppressors (556K, 556, 762, 762 Ti, and Magnum Ti) and FLOW series suppressors (556K and 762 Ti). VENTUM series suppressors require the HUX HUB Adapter.

Will this flash hider fit my AR-15?

Yes, provided your barrel has 1/2"-28 TPI threads, which is the standard for 5.56x45mm NATO AR-platform rifles. If your barrel uses a different thread pitch, this device will not fit.

Can I use this flash hider without a suppressor?

Yes. The 1677 QD is designed to mitigate muzzle flash when running unsuppressed. You can also attach a compatible Huxwrx suppressor whenever needed via the quick-detach interface.

How much does this add to my barrel length?

The Huxwrx 1677 QD has an overall length of 2.30 inches.