Wideview Scope Mount WSM-EHOP See Thru Scope Mount for the Ruger 10-22 Extra Hi Ring Ruger 10-22 Extra Hi Ring 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