The HX-QD 556 Titanium suppressor with patented and proven Flow-Through and Torque Lock technology is built with a combination of Grade 5/Grade 9 Titanium and 17-4 stainless steel. It delivers superior accuracy and repeatability, is full-auto rated and compatible with 5.56 rifles with no minimum barrel restrictions. It utilizes OSS's new Flash Cap that eliminates virtually all flash. The HX-QD 556 Ti has a stainless-steel core that delivers durability in excess of 40,000 rounds. Compatible with Muzzle Brake-QD 556 and Flash Hider-QD 556.