Featuring the highest magnification in the Sightmark Triple Duty Riflescope series, the 10-40x56 Riflescope is built for the challenges of long-distance shooting. This high-powered scope is equipped with a Mil-Dot reticle for exceptional range estimation and fully multi-coated optics crisp, clear imaging at the most difficult shots. The one-piece 30mm tube Offers a wide field-of-view for quick target acquisition like no other. This precision scope is equipped with a parallax adjustment knob and oversized, locking windage and elevation turrets with 1/8-inch MOA clicks, providing an additional level of accuracy and ensuring that the scope stays zeroed. O-ring sealed and nitrogen-purged, the Triple Duty 10-40x56 Riflescope is both fog proof and water resistant.