HUXWRX Safety Company Flow 556K, Suppressor, 5.5, 556NATO, C-Series Cerakote Finish, Black, 17-4PH Stainless Steel, Includes 1/2X28 Flash Hider 2449 An innovative multi-caliber suppressor with patented and proven Flow-Through and Torque Lock technology. It is designed to reduce signature without negatively impacting cycling or service life. The FLOW 556k is DMLS printed in 17-4 Stainless. It delivers superior toxic fume exposure mitigation, flash reduction, sound reduction, recoil reduction, accuracy, and repeatability by its unique Flow-Through helical coil and core deflector design. It is full-auto rated and compatible on 5.56, 17 HMR, and 5.7 platforms. The integrated flash cap geometry effectively mitigates flash as part of its overall signature reduction functionality.