The ATN Professional series rifle scopes are the only scopes in the world with the Eve rlight and Proshield Lens Coatings. We developed and formulated these two exclusive lens coatings specifically for the Professional series. The revolutionary Everlight coating is designed to enhance the resolution and contrast of your image in extremely bright conditions. When there is too much light you will normally notice a degraded optical image. which is prevented by our Everlight coating. Some of the leadingscope manufacturers have been installing less reliable mechanical aperture shutters to compensate for this problem. You will never lose sight of your crosshairs due to darkness with any of the scopes in the ATN Professional line. Our illuminated reticle has a 10 position rheostat to adjust brightness from a well-defined black reticle for conditions to a glowing red reticle for low light conditions.