HiViz TriViz Shotgun Front and Rear Combo Sight incorporates triangular elements that form the sight picture, align effortlessly, and leave absolutely no doubt as to point of impact while insuring a solid, head-down position on the stock. Unique LitePipe technology provides superior brightness in an innovative injection-molded, optical-grade resin rear sight. The shape of the rear sight frames and contains the target and is even adjustable for windage with a simple turn of a screw. Can be used with the rear sight during deer or turkey season, and without it for upland bird hunting, waterfowling, or clay target shooting. Mounts on all common vent rib sizes without drilling or tapping. Perfect alignment thanks to unique triangular alignment design Litepipe technology provides bright easy to see sights Adjustable for windage Removable rear sight, depending on target Mounts on most vent rib sizes without drilling or tapping