Seems to me to be an easy fix. But if you don't have access to a drill press or a very steady hand I wouldn't attempt it. It wouldn't be too difficult to drill a small hole in the center and a tiny easy out to remove the old bead then screw in a new one. But a gunsmith could do this quickly and it shouldn't cost more than a couple bucks.
Another thing you can do is get a low profile fiber optic sight and epoxy it to the barrel. A good quality epoxy will hold the sight on forever.
Last edited by bronko22000; 02-19-2019 at 08:01 AM.