Well, it all is irrelevent now as the newest CZ-52 is more than 50 years old, the cutoff year. It can be modified in an infinite number of ways as long as it is 50 years old or older. 10 years ago, it mattered, as they were all less than that. Now, well, since the newest Cz-52 was made in 1954, the newest is 51 years old. Hard chroming is no problem, nor is 9mm barrel.
Davis