• The PVS14 lens cover is design to protection and change the performance of night vision devices
• Adjustable iris with lens protector. 1x iris in the package. polycarbonate sacrificial lens for 92% light transmission，o-ring for keeping debris out
• Adjustable Iris Aperture: Infinitely variable from open to close to allow the optimal amount of light into the NVGs and maintain auto-focus capability
• The lens cap for night vision devices is made of 6061-T6 aluminum alloy body, rapid adaptation to ambient light by turning the adjustment ring, opening or closing the iris
• Easy and secure attachment to end of NVGs