The 4 magazines I purchased from the e store were SGMT1210L but my IZ-433 030 is not converted, it doesn't have the pistol grip. I also read about the 433A not working with anything but factory magazines, this also seemed odd. The dealer that sold me the weapon says he can remove the factory magwell and it will work with the rock and locks magazines, but being he did not have any in stock he couldn't prove it. The info I had said the receiver was milled more from the factory so standard magazines would not work. Thinking seriously about selling my IZ-433 and finding one already converted and w