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.
Fit Details: 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 .5; 3mm x .6.
LitePipe Color: Green (4), Red (3), White (1)
LitePipe Shape: Round (4 Diameters)

Check out www.hivizsights.com to see if these are compatible with your shotgun