Hi-Viz Narrow Magnetic Shotgun Sight - Green Hi-Viz Magnetic shotgun sights Fits vent ribs 7/32" to 21/64" Helps you shoot better Great for all shotgun gauges Easy to install with magnetics Magnetic base sight to fit ventilated shotgun ribs from .218 inches to .328 inches Includes one green LitePipe Fits all Remington field models; Browning: Gold 10 gauge; Benelli: Super Black Eagle; others (see description) HiViz recommends gunsmith installation for all dovetail sights Due to manufacturing tolerances, some firearms may require additional fitting