Get closer to your target with the Sightmark Triple Duty Riflescope. Tested and recommended by the National Tactical officers Association, this high-power riflescope features a large 50mm objective lens and a Mil-Dot reticle which offers bright, crisp images at long distances. Designed for superior range estimation and long-distance shooting, it utilizes cutting-edge glass with fully multi-coated optics for exceptional clarity. The one-piece 30mm tube is O-ring sealed and nitrogen-purged, making it fog proof and water resistant. This precision scope features 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.