Hi Viz Spark II Sight - Bead replacement sight 6-48 fits Remington, Ithaca, SKB field guns 3-56 fits Browning Citori target, Benelli, Beretta, Ruger, and Winchester shotguns 5-40 fits Mossberg 3mm x .5 fit Browning Gold 3mm x .6 fits Browning Citori...