Hi-Viz Rear Turkey Sight Small - Fits 1/4-9/32 Ribs Hi-Viz two dot rear turkey sight Fully adjustable, small size Mounts on shotguns with vent ribs with 1/4" to 9/32" Shoot Better with bright sights Great for turkey hunting and more! Double dot fully adjustable rear shotgun sight Dual Green LitePipes Fits Remington Benelli Charles Daly Ithaca and Browning field guns HiViz recommends gunsmith installation for all dovetail sights. Due to manufacturing tolerances, some firearms may require additional fitting.