Some years ago I acquired a Norinco GI 45. It shoots well enough, and the
trigger is good for a carry gun. Here's the problem: The lugs on the top
of the barrel are getting rounded over. I did some research, and my gun
seems to be one of the early imports where the slide was machined wrong.
When the barrel goes into battery, not enough of the lugs engage the slide,
so the tops of 'em are getting rounded over. I've got a few choices:
1. Slap a 22 conversion kit on it and call it good. Except that I already have
one of those, it's a good choice. I guess two wouldn't actually hurt me.....
2. Refit a new barrel with a longer link, which may or may not fix the problem.
3. This is the most interesting option to me, which is to put a 9mm top
end on it. Who makes a good one?
4. Move it along for what I can get (how much?!) and buy a new Remington.

What's your advice and why?
-Stretch