The Buckmasters series of scopes is designed as the perfect compliment to the American deer rifle. Rugged. Water/Fog/Shock proof. A huge 50mm objective lens maximizes exit pupil(15.1-5.9mm)for superb low light clarity and brightness! The power range is the one most preferred by hunters across the country for the best blend of field of view (33.9-12.9'@100yds) and target discrimination. 12.9"long, 18.2oz. Eye relief: 3.5-3.4".