TruGlo's Glo-Dot Xtreme Universal Sight is compatible with ventilated rib shotguns. It features an extremely low profile, has easy magnetic installation. This model includes multiple interchangeable fibers in different colors, and 4 different sized mounting bases. Product Features Multi-colored interchangeable fiber system Internal magnet makes mounting easy Their original wing and clay sight Fits all ventilated rib shotguns regardless of width or tapering Extremely low profile Fiber diameter is .060" Endorsed by Ducks Unlimited