The ATN MARS4x-CGT Night Vision Weapon Scope - 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.