The ATN Z-series daytime scopes are not an evolution but a revolution, not an improvement, but a breakthrough. For years best names in optics were aspired to produce a balanced large aperture tactical scope. Large aperture renders into large Exit Pupil. Large Exit Pupil means longer operating hours and better performance in low light conditions and in "stressed" environment. Nevertheless, the "let's get a Big Hunting scope and put a Mil-Dot in it and call it 'Tactical'" approach always led to a problem with uncomfortably high mounting. The new Z-series prismatic design solves all these problems, and allows a sniper to use a scope with 65mm aperture that sits closer to the barrel than a standard 40mm scope. With a sharp crisp image, workable size, high durability and with an abundance of features like illuminated Army Mil-Dot reticle, interchangeable Bullet Drop Compensator for five different calibers, "will-not-bump" eye relief and parallax adjustment, the ATN Z-series daytime scopes are a standard not an option for LE marksmen and military snipers alike.