This screw-on bead replacement sight offers instant success to cross-eye dominant shooters. Utilizing HIVIZ Magni-Optics Technology, Magni-Comp is an affordable sight solution that replaces standard beads on most shotguns, offering struggling shooters immediate relief and better shooting. Comes with red and green interchangeable LitePipes and a big smile. Fits most vent-ribbed shotguns with removeable front bead. Sight includes five screws in varying thread sizes to fit nearly any shotgun: 3-56; 5-40; 6-48; 3mm x 0.5; 3mm x 0.6.