The quietest SureFire suppressor has ever designed. It is optimized for .300 BLK/Whisper (7.62x35) subsonic and supersonic ammo, but delivers exellent suppression from 5.56 to 300 WM. Constructed of Inconel alloy and stainless steel, and CNC laser-welded, it’s stealthy without sacrificing an ounce of strength.