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-Benelli Legacy, M1 Field, Montefeltro, Super Black Eagle, 12 ga. Vinci & Nova; Browning BPS, Gold Light 10; Ithaca Model 37 (with 5/16 vent rib); New England topper, Pardner, Excell; Ruger Red Label shotguns; Savage shotguns; Stoeger Model 2000, P-350 Pump (all models) and Weatherby SA-08, PA-08 12 ga.