We all have multiple guns. This is just one reason. Use one of the others.

I don’t see how it could be worthwhile, money wise, to have the repair done to the original barrels. A second, orphan set of tubes might be out there, they still won’t be free. Full length 20 gauge tubes might be an option. They wouldn’t be for me, however.

There are too many suitable 12 gauge O/Us out there to spend a bunch on this one. Just my opinion, but, I don’t think I’m wrong.

Good luck, however it goes.

Best,
Ted