I think that’s open to the bb area, so that should work. You’ll need a rivet gun, and you’ll probably have to end up using a wattle bottle (larger) rivet. That’s work that not many shops are willing to do nowadays, so I wish you luck finding one. You could use a rare earth magnet inside the frame through the battery cover hole and use one in the cover as well. That might work for you to hold it in place as well.