Hi-Viz Magnetic Shotgun Sight-Ultra Narrow fits most shotguns has a magnetic base to fit ventilated shotgun ribs from 11/64″ to 17/64″. Shoot better on the range, in the marsh and in the field with a super bright Hi-Viz shotgun sight. Great sight for sub-gauge shotguns. Easy to install with magnets Fits Beretta 686 and 687 models with ultra narrow rib AL390 A304 AL390 Field 391 Urika Field Browning Gold Series 28 gauge and 410 Citori SigAmrs SA-3 Hunter SA-5 Upland and Benelli 20 gauge shotguns. HiViz recommends gunsmith installation for all dovetail sights. Due to manufacturing tolerances, some firearms may require additional fitting. Product Dimensions: 7 x 4 x 1 inches ; 0.96 ounces
