FLOW 556k + Flash Hider

PLEASE NOTE: SUPPRESSORS ARE NOT LEGAL IN ALL STATES. ANY ORDERS TO RESTRICTED STATES WILL BE CANCELLED.

Restricted States (as of JUNE 2025): CA, DE, HI, IL, MA, NJ, NY, RI

With the enhanced benefits of 3D printing, the FLOW 556k is a lighter and quieter suppressor when compared to legacy suppressor systems. It delivers superior toxic fume mitigation, accuracy, repeatability, and sound reduction. By 3D-printing in 17-4 stainless steel, the FLOW 556k has improved erosion resistance and durability. This innovative multi-caliber suppressor utilizes patented and proven Flow-Through® and Torque Lock® technologies. The FLOW 556k is full-auto rated and compatible with 5.56, 17 HMR, and 5.7 platforms. No significant modifications to the platform or gas system are required to install or operate this suppressor.

Flow-Through® technology cycles and redirects expanding gases in a helical pattern away from the bore line, through the front of the suppressor, and away from the shooter's face, eyes, and lungs. The Torque Lock® system takes advantage of the rotational force of exiting gases created by the Flow-Through® design. As the gases travel forward and out through angled vents in the end cap, it virtually makes it impossible for the suppressor to come loose when shooting and negates the need for a secondary locking system. With the Flow-Through® design, no significant modifications to the platform or gas system are required to install or operate this suppressor.

Materials & Finish: The FLOW 556k is 3D-printed in 17-4 stainless steel. It is DMLS printed and a monolithic structure coated with C-series high-temperature Matte Black and Flat Dark Earth (FDE) Cerakote®.

Compatible with Muzzle Brake-QD 556 and Flash Hider-QD 556.

This product includes one (1) FLOW 556k Suppressor, one (1) Flash Hider-QD 556 1/2x28, and one (1) Flash Hider Wrench-QD.

All suppressors must ship to a valid NFA Dealer in your state of residence. Orders cannot be changed or cancelled after they are placed. Items refused by the NFA Dealer or that cannot be transferred due to a failed background check will be subject to a restocking fee.

By ordering a suppressor, you certify you are the actual transferee/buyer of the suppressor, are of legal age, and satisfy all Federal, State, and local legal/regulatory requirements to purchase a suppressor. It is your responsibility to comply with all local regulations that apply to the purchase.

Per ATF regulations, FFL and SOT licenses are required for all suppressor purchase transfers. If your chosen NFA dealer is unwilling to provide you with these documents, please have them email current and valid copies of their FFL and SOT licenses to pro@huxwrx.com.

Be advised – it is the responsibility of the customer to arrange that HUXWRX receives these documents in a timely manner. Orders without these licenses provided at the time of purchase may experience delays in processing.