NLX-5 Hi-Helix Flash Suppressor The NLX-5 Hi Helix Flash Suppressor combines great looks with exceptional results. Our team at Next Level Armament turns each piece from billet stainless steel in one operation. The Hi Helix Flash Suppressor features single piece construction. Our design hides muzzle flash from all angles to give you one of the best flash suppressors available today. Whether you desire a unique finished look to complete your rifle, or exceptional function, the NLX-5 fits the bill. Upgrade your current rifle or add it to your next build. Either way, you will have one of the best flash suppressors available. We finish each NLX-5 with a Nextride QPQ coating and laser engrave with our company logo. Comes with a crush washer. Dimensions: Length 2' Diameter .83' 1/2-28 threads