Fix Arm directly attach to NVG Shroud Mount Hole. 

Reinforced lens, lens thickness up to 3MM, enhanced surface treatment, special coating treatment, more durable than ordinary lenses;
Lens contains anti-fog coating, the lens encounter water vapor will not fog, with the nasal spray of hot air is not affected, will not fog, keep a clear view.
 
The Visor is a lightweight and easy-to-use protective enhancement to the  Head Protection System.  It provides flawless optics to ensure the Warfighter is never distracted from the mission, while its unique pivot arm allows for three in-service positions: up when not in use, vented for cooling, and locked in the down position to protect .

It also works great as eye protection when driving open cockpit vehicles like Motorcycles. 
Easily clipping into the Front Shroud Mount, the Visor System can be quickly donned or doffed as the situation develops. 
The lens is optically engineered for flawless optical clarity, meaning there is no distortion to the wearer’s field of view.