Demolishing the competition, the Nightforce Competition Riflescope features ED glass for superior color contrast correction and high resolution, an astonishing 92% light transmission, fast-focus European-style eyepiece, side parallax adjustment from 25 yards to infinity, Hi-Speed windage and elevation adjustments of .125 MOA, and ZeroStop. Weighing in at just 27.8 ounces, the Competition has a total elevation travel of 55 MOA, total windage of 50 MOA, and each rotation provides 10 MOA of adjustment. A 20-30 MOA tapered base is recommended to achieve the maximum performance from your Competition riflescope.