I searched for a new barrel for my 11-87 but couldn't find one in the $75.00 range. This is the cheapest barrel that I could find but PLEASE CALL AND CONFIRM that this barrel will fit your gun.
http://www.rrarms.com/catalog.php?prod=R4582
If I were you I'd get your local gunsmith to thread it for you. My gunsmith charges $50.00, 2 day service.


God Bless,