I would like to point out that the plugs that are so nicely made by several sellers are not an ideal rememdy for the hole. The entire reason for removing all the lock parts is to get rid of unnecessary parts inside the gun that may come loose in there. It is a partial cosmetic cure for the hole, but partially defeats the purpose of taking the parts out, to put other parts back in.

The hole is not a problem as seen in Jerry's gun, and the plug is only a cosmetic patch. If you are worried about that little hole in the side, you might as well tape over the muzzle, and put wax in the charge holes, still have openings in the gun behind the trigger, and at the top and bottom of the cylinder, and so forth, as well as the slot beside the hammer where the flag was removed. Revolvers are full of holes, gaps, slots, and openings, so what's the problem of the IL hole. Fuggadeboutit.