US NightVision Eye Cup PVS-7/PVS-1414/6015/USNV-14. It also has a retaining bracket that secures the Eye Cup onto the helmet / head shell. The US NightVision PVS-7/PVS-14/6015 Eye Cup Assembly snaps onto the front of the PVS-14/6015 & USNV-18 Night Vision Devices using the bayonet / ring method. It does not alter the outside dimensions of the USNV-14 Eye Cap but rather the inside dimensions of the PVS-14/6015 & USNV-18 Night Vision Bearskin. The USNV-14 Eyecup is a very important detail that should never be overlooked when using night vision. It is very important when doing night time operations because of the great distances that must be covered and the great challenges that must be surmounted. The US NightVision Eye Cup for PVS-14/PVS-14A/6015/USNV-18 is an excellent example of the superb engineering that US Night Vision can provide even in a small package. Specifications for US NightVision Eye Cup PVS-7/PVS-1414/6015/USNV-14: Manufacturer: US Night Vision Color: Black Additional Features: Fits PVS-7/PVS-14A/6015/USNV-18 Package Contents: US NightVision Eye Cup PVS-7/PVS-1414/6015/USNV-14