SOLGW NOX Flash Hider: 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 is designed for a right-handed shooter, pushing the rifle down and into the support (left) hand. The NOX can also be timed for a neutral or for a left-handed shooter position as well. This can be accomplished turning the device 45 or 90 degrees (respectively). The NOX will also bring 13.7 builds to a perfect 16 OAL when permanently affixed to the barrel (As per ATF instruction).