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. Series: 556K Model: Flow Caliber: 5.56x45mm NATO Color: Black OAL: 5.50" Material: Stainless Steel Finish: Cerakote NRR: 143 dB Diameter: 1.60" Thread Pattern: 1/2"x28 Weight: 12.90 oz