Need some help guys

A friend of mine (no kidding it isn't me) did a bad thing with his 111. While mounting a leupold scope mount base he broke a screw off in the receiver. He then decided to bore out the screw and re tap the hole. Probably would have worked except he drilled completely through the top of the receiver. He then took the rifle to the range with the scope mounted and fired a shot. As you might have figured the scope blew off of the rifle and flipped over his head. No one was injured. I have not seen the rifle but he said it still functioned properly, but obviously the scope mounts and that hole in the receiver are a problem. What do you think we can do to resurrect this rifle? I told him we could probably fix it for less than the price of a new one. If not he could just buy a new one and have spare parts on hand.

Thanks Much