Hi. You can get a reproduction that will fit your 3/4 inch scope. Much less pricey than an original. About 12-15 bucks. Go to AUCTION ARMS,or GUNBROKER auctions,use the search feature,and you can probably find the seller. Fast,easy,and clean. By the way,the copys have a VERY small raised mark,like a line,on the side. This was done so the repos would not be passed off as originals. If you have to have an original,use your computer to search UNERTL. There is a guy who sells the old scopes,and he may have one. His name escapes me at the moment,sorry.Yes,the old scopes are pricey,but they sure look cool. And they work VERY well,as these old eyes can attest to.Good luck,Brian.