Check the listing for details. Hiviz Narrow Magnetic Fiber Optic Front Shotgun Sight Comfortable Gun Tool Safe. Condition: New. Listed at 28.16 USD. Product Details Product Dimensions: 7 x 4 x 1 inches ; 0.48 ounces Shipping Weight: 0.8 ounces Item model number: M300 #94 in Airsoft Gun Sights #11152 in Hunting Equipment Hi-Viz Magnetic shotgun sights Fits vent ribs 7/32" to 21/64" Shoot better at the range or in the field Great for Sub-Gauge shotguns Easy to install with magnetics Magnetic base sight to fit ventilated shotgun ribs from .218 inches to .328 inches Sight includes four interchangeable LitePipes 2 green and 2 red Fits Remington field models Browning Gold 10GA BPS Auto5 Berretta Comp T and ST ribs Pintail auto Ruger Red Label field guns Ithaca Model 37 and other models Benelli Super Black Eagle and all field guns Franchi field guns HiViz recommends gunsmith installation for all dovetail sights. Due to manufacturing tolerances, some firearms may require additional fitting.