Not just CZ. I read (on the M&P Pistol Forum) yesterday where a guy bought a new M&P, had issues with a magazine and while S&W agreed to send him a new one they also told him that they didn't have any in stock but would ship him one as soon as they got some in stock. This was for a new model they just released and they only have enough magazines to put two in the box with the new guns, no extras to sell or replace faulty mags.
I'd had to have a new concealed carry gun and not be able to buy additional magazines for it. Only two is several too short for my comfort.