I must admit that I don't know if this can be done. (I have seen advertizements for replacement .380 ACP barrels for Makarov (spelling?) barrels, but so far I have not seen a replacement for the CZ 82 9mm Mak barrel.
We sell the CZ 83 blue model pistol brand new for just over three hundred dollars (I think!). Why would you spend $259.99, pay the transfer fees and get a used military pistol chambered in a round that you may or may not be able to get ammo for in the future. Or even consider paying, let's just say one hundred dollars for a .380 barrel then have to pay a gunsmith to fit, function test, and test fire the new barrel?
Yours,
Virginia Jake.