I see on Baikal's web page that there's a 9mm Parabellum Makarov. Are they available?
According to the director Russian Affairs at former importer B-West, they tested the 9x19 Makarov availabe from Baikal. The way the 9x19 Makarov works is that the chamber is scored or serrated, the brass gets blown out into those serrations thereby retarding blowback. The result is that the brass is shredded and unusable for reloading, the brass is tossed into low orbit, and the recoil of the gun is horrendous. For liability reasons, B-West refused to import these.
Similarly, reaming the chamber of a .380 ACP pistol by 2 "silly millimeters" is discouraged. Naturally, if you want to shoot only handloads and know what you're doing while working up a load, you can try this. I suggest a good life insurance policy first though.
Excerpted from Mak.com