Quote Originally Posted by browningautorifleicon View Post
Sounds like a parts rifle...but anyway, to fix headspace with existing parts you need to turn the barrel back one complete rotation and that's not so easy for the layman. It will still fit in the wood and with a bit of alteration and fiddling, most won't even be aware. You'd be able to fit a bayonet with some woodwork effort. Easier yet is to get a NOS barrel fitted. They're around.
I think you’ve got it backwards. Sounds like the barrel may be short chambered and just needs a reaming.