The ATN MARS4x-CGT night vision weapon scope is the world's largest line of professional night vision sights. Inspired by ATN's quest for technical perfection and named after the roman god of war, the ATN MARS4x-CGT NV riflescope represents the absolute latest in the world of Night Vision equipment. Similar to all ATN Aries scopes the ATN MARS4x-CGT features only the purest grades of heavy glass and computer-aided optical designs to create multi-element, high-speed, multi-coated lenses for ultra-fast light transmission and resolution beyond current military standards. All optical lenses on the ATN MARS4x-CGT are individually fitted and calibrated to achieve optimum performance. ? less