Wideview Scope Mount WSM-AA See Thru Scope Mount for the Browning Semi Auto, Lever Action and Mossberg 500a-600 (thru 1996)Firearms Fits the Browning Semi Auto, Lever Action, Mossberg 500A-600 (1991 thru 1996) firearms This scope mount is made of aluminum extrusion anodized bright for lifetime use The screws are heat treated socket cap screws and they have a special oversize head for more holding power in the aluminum These see-thru mounts allow you to use the iron sights as well as the scope so you won't miss that close running shot. Also great in winter when the only thing you see in your scope are snow flakes 100% Manufactured in the USA