Neutral Configured NOX with 3 Ports at 9, 12 and 3 O’Clock, Great for Left and Right Handed shooters. The NOX Flash Hider is one of the top muzzle brake/ flash hiders on the market. Designed to reduce concussion while controlling both flash and muzzle rise. The NOX is also a suppressor mount for the Dead Air Sandman and Nomad suppressors. The NOX will also bring 13.7” builds to a perfect 16” OAL when permanently affixed to the barrel (As per ATF instruction).