At one time, years ago, Bar-Sto made various conversion barrels for CZs. They stopped, out of what appeared to be lack of demand.
There are so many more CZ users out there, now, it's probably time for them to reexamine their unwillingness to make CZ barrels. (A number of CZ-40B users were love to have 9mm barrels, for example, as would some 75B in .40 shooters.)
Emails to Bar-Sto (and some of the other barrel makers) might help.