Weaver made several different scopes over the years with the name " Marksman." The early Marksman was also a good scope for these air rifles & was thin like the other Weaver .22 scopes I mentioned above . I think I have one of these on one of my rifles in the stable. Sometimes, you find them at flea markets/yard sales. If you find one on auction,, they may bring a premium !!https://www.ebay.com/itm/Vintage-Weaver-Marksman-4X-Scope-22/282863592995?hash=item41dbfbe623:g:KBAAAOSwluxalLP9