The NOX Flash Hider is one of the top 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 line of suppressors.

The NOX is designed for a right handed shooter, pushing the rifle down and into the support (left) hand.  

The NOX can be timed neutral or for a left handed shooter by turning the device 45 or 90 degrees respectively.

5.56 - 1/2x28

.30 cal - 5/8x24