Immortal Air Aura 4.5k Regulator Internal Marker Upgrades a carbon fiber "main-barrel" which

a carbon fiber "main-barrel" which is the main part of the barrel (sets the length)

and using High-end nylons throughout

Gloss Gold anodized finish

They operate solely on invisible infrared wavelength

17549 Feedneck Screw (1)

Immortal Air Aura 4.5k Regulator Internal Marker Upgrades a carbon fiber "main-barrel" whichFully Adjustable The fastest and easiest way to adjust your regulator Aura regulator is equipped with numerous safety and performance features to provide you with an extraordinary playing experience. Trial by fire, player approved. Features Light and compact Just right: not too big, not too small eliminates the need for a reg extender Massive flow rate instantaneous recharge No shoot down Rock Solid performance Fully adjustable output pressure range