Armasight Sacrificial Window for NYX-14 Night Vision Monocular ANLC000002 takes damage so your delicate night vision optics don't have to. These self-sacrificing Armasight night vision accessories attach to the front of your optics, where they act as a barrier between the monocular's lenses and the outside world. The night vision accessory is particularly useful in environments where there's a lot of dust, dirt, sand, or other particles, such as in high winds, storm conditions, or dry areas. Once it becomes too scratched up and damaged for use, the Arma-Sight Night Vision Monocular Sacrificial Window Accessory can be removed and replaced with another sacrificial window, thus preserving your night vision optics for years to come. Armasight has designed this particular sacrificial window to fit the NYX-14 night vision monocular. Protect your night vision monocular from the outside world with the selfless Arma Sight NYX-14 Night Vision Sacrificial Window.