The HIVIZ CompSight has become the standard for competitive shotgun shooters and is the choice of national and Olympic champions. The original CompSight design features an all-steel base and interchangeable LitePipes. Includes multiple diameters of LitePipes in green, orange, red and white along with a LitePipe storage/changing key. It is compatible with most vent-ribbed shotguns with removeable front bead. Fits nearly any shotgun 3-56; 5-40; 6-48; 3mmx.5; 3mmx.6.