(did not know squat about "Universal" brand)
Is it a Universal???? Is it a flat top or round top bolt??
If so they used USGI parts in many of their early carbines around the first 20%.
The next 30% a mixture of GI and in house produced.
After that it was down hill to the double recoil spring stamped parts not treated crap.
I really see no reason that you can't try a USGI barrel on a early one
Whats the ser# on yours? There were somewhere around 2.5 million Universals produced