In partnership with exhibition shooter Tom Knapp, this highly-visible fiber optic sight is designed to attach to the ventilated rib or solid rib of any shotgun barrel. Its low profile will not change your point of impact. The intensity of the fiber-optic bead lets you aim with your indirect vision, making it possible to see the bead without looking at it. Now, you can concentrate 100-percent on the target and still know exactly where your shotgun is pointing.