You are posting in an appropriate forum. I haven't a clue where you might find OEM mags from such a limited production. I wish you luck on your quest. This is not the sort of item that will be found on a random table at a gun show. It seems that you have a truly collectable and unique weapon. A quick search showed that most of the production of the A232 was believed to have been exported to europe and none had surfaced in the US, do a company search and try to locate remaining employees if possible, may be your only lead on the mags.