I missed that possibility.
One “could” buy an old barrel and have it machined to modern specs, saving the original.
Some shops have racks of old barrels just hanging there for years. Might just find one.
I believe Brian Meckler did that Many years back on another site.
But you end up way into an old gun.
When you see the same 50+ 1940’s auto loaders Standing in line on the rack, untouched for years,
You conclude you are better off to put $400.00 into a Turkish auto when they go on sale.
I might put 10 rounds a year through my 16, if that.
It’s just another symptom of time passing.