Wideview Scope Mount WSM-II See Thru Scope Mount for CVA Octagon Barrells Appolo Shadow Use Iron Sights As Well As Scope. Don'T Miss That Close Running Shot, Bobcat, Frontier Hunter, Appolo Classic, 90 Rifle, Grey Wolf, Lynx, Plainsman, Silver Eagle, Woodsman Fasten Directly To The Receiver Use Heat Treated High Carbon Steel Socket Cap Screws, Hawken Deerslayer, Stalker Rifle, Tracker, Trophy, Knight, Hunter,Stalker, Preditor, Mk85,Bk92,Knight Hawk, Magnum Elite, T-Bolt, Flat Receivers, Traditions Deer Hunter, Whitetail, & Flat Receivers. Made In Usa Of Heat Treated Aluminum Extrusion For Light Weight. Fit Up To 50Mm Objective Lens