The ATACR Riflescopes are designed to maximize the the potential accuracy of semiautomatic and bolt action rifles while also offering the revered bomb-proof durability Nightforce optics are known for. They feature a one-piece tube precision machined from a solid bar stock of 6061-T6 aircraft-grade aluminum alloy. The tube is two to three times thicker than riflescopes of a lesser quality, resulting in less overall stress, greater thermal stability, a consistent zero and a virtually impervious shield for the precision optics within. The lenses are matched and aligned by hand in a process called optical indexing to ensure the highest possible optical performance. The objective lens utilizes a multi-element design like those found in the highest quality telescopes to focus light rays more precisely for exceptional image clarity and color accuracy. Optical performance is further enhanced thanks to multi-coated ED glass that results in superb light transmission, brilliant images, and exceptional color contrast. The elevation turret on ATACR Riflescopes are equipped with Nightforce’s ZeroStop Technology to provide an instant return to zero after making adjustments in the field...