Mueller Sport Dot Rifle Scopes are designed for the big game hunter. They are built to withstand heavy recoil and feature a glass-etched reticle and one-piece tube. Lenses are fully multi-coated camera quality crystal for excellent contrast and brightness. The turrets are finger adjustable for fast and easy adjustments in the field while the fast focus eyepiece allows for simple reticle clarity adjustments. The German #4 reticle features an illuminated dot, adjustable via the 11-position rheostat, which aids in quick and precise shot placement. All of these features come at a great price. Lifetime factory warranty.