Hi-Viz CompSight, Interchangeable Shotgun Sight. Screw-Attach design replaces the front bead on a shotgun. Fits most vent-ribbed shotguns with removable front bead. Includes four Green, three Red, and one White replaceable LitePipes in four diameters. PM1002 HIVIZ(R) CompSight(R) Interchangeable Shotgun Sight. Screw-Attach design replaces the front bead on a shotgun. Fits most vent-ribbed shotguns with removable front bead. Includes four Green" three Red" and one White replaceable LitePipes in four diameters.