The HUXWRX Flow 556k kit in black pairs the short Flow 556k suppressor with a Flash Hider-QD 556 in 1/2×28 (HUXWRX part no. 2449). HUXWRX Safety Co. built it around patented Flow-Through and Torque Lock technology to reduce signature without hurting cycling or service life. A helical coil and core deflector inside cut toxic fumes, flash, sound and recoil, and the integrated GeoFlash Cap handles flash at the muzzle. It is DMLS printed in 17-4 stainless steel and finished in black C-Series Cerakote. Full-auto rated and compatible on 5.56, 17 HMR and 5.7 platforms, it is sized for a carbine or short-barreled rifle where length matters.

Key Specifications

• HUXWRX lists compatibility with 5.56, 17 HMR and 5.7 platforms, which makes it a multi-caliber can.
• The can is full-auto rated, a margin that suits carbines and short barrels.
• Overall length is 5.5 inches, short enough to keep a carbine or SBR handy.
• Weight is 12.9 ounces, a manageable load at the end of the barrel.
• Diameter is 1.6 inches, a trim body for a 5.56 suppressor.
• It is DMLS printed in 17-4 stainless steel, a tough alloy for sustained fire.
• The finish is black C-Series high-temperature Cerakote, which resists heat and wear.
• The kit includes a Flash Hider-QD 556 in 1/2×28, so the can has a mounting device in the box.
• A Flow-Through helical coil and core deflector design sends gas forward, reducing fumes, flash, sound and recoil.
• Torque Lock technology provides the quick-detach mount on HUXWRX QD 556 muzzle devices.

Frequently Asked Questions

What comes in this Flow 556k kit? The kit includes one Flow 556k suppressor and one Flash Hider-QD 556 in 1/2×28, which is the muzzle device the suppressor mounts on.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

Which platforms is it rated for? HUXWRX lists the Flow 556k as full-auto rated and compatible on 5.56, 17 HMR and 5.7 platforms.

Buy the HUXWRX Flow 556k Suppressor Kit, Flash Hider-QD 556 1/2×28, Black

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. It suits a shooter who wants a short, light 5.56 can with its flash hider ready to go. Order through HUXWRX‘s suppressor lineup and our Lubbock, Texas team will handle the transfer.