HIVIZ TriViz Fiber Optic Turkey Sight Hi-Viz TriViz turkey and deer combo Adjustable rear sight Fits shotguns with 1/4" to 3/8" wide vent ribs with removable front bead Shoot Better with bright sights Great for turkey and deer Front and rear Turkey sight Mounts on any vent-ribbed shotgun with removable front bead Includes 4 green LitePipes Fully adjustable for windage and elevation HiViz recommends gunsmith installation for all dovetail sights. Due to manufacturing tolerances, some firearms may require additional fitting.