If Field of View is your first priority step up to the E-Dot 47mm Magnum. Ready to mount onto Weaver style base systems the E-Dot 47mm Magnum is suitable for use on airguns pistols shotguns and rifles. Field of view: 74 feet at 100 yards. Click adjustment: 0.75M.O.A.. Finish: Black (Nickel available). Dot size: 10 M.O.A. Warranty: 5 years.