The pistol was originally chambered in the 7.62x25 or 7.62 Tokarev bottle-necked cartridge. While this cartridge shares the physical dimensions of the Tokarev cartridge, it can be loaded hotter than the standard 7.62 Tokarev (see text on roller lock below). As such, care should be taken when selecting ammunition to match the pistol.
The CZ-52 pistol can be converted to fire 9x19 simply by changing the barrel. Some pistols have been retrofitted from the factory with a 9mm barrel, and aftermarket barrels are available. There are some feeding and extraction issues related to this, which are discussed below. From a safety standpoint, be sure that you are firing the correct ammunition from the correct barrel.
Curio and Relic Status
Also has great accuracy.. would cost over a thousand dollars for an American gun maker to make a gun of this caliber and quality. Every one loves shooting this and most people agree that when found on the market you should pick them up... Most buy more than one when they can. The prices are going up as we speak.