TruGlo’s Pro Magnum Gobble-Dot is an adjustable sight that will have you hitting right on target. It securely mounts to your rib without tape or magnets and is fully windage and elevation adjustable. Endorsed by the National Wild Turkey Federation. *Note- Designed ONLY to be installed on a shotgun barrel with a ventilated or solid rib design. Fits- Fits- Winchester Super X3; Benelli Legacy, Montefeltro, Nova 20 ga; Browning Gold Series, A5; Franchi Field models and Weatherby Orion, Athena O/U 20 ga .