Hey there:
I have this old gun, good shape, except rear stock is loose, needs tightened. I took plate off butt, and looked in, and it looks like a "stove" bolt for the stock bolt. No nut and/or slot for a screwdriver to get this off. Anyone ever run into this ? I don't have any other ideas, may just have to drill and tap, or drill and use a large screw extractor to back it off and loose. This is a mystery to me, never seen anything like this before on a butt stock.
Please help if you can.
Thanks and all the best,
casper_zip