this is just a head ups if your looking for some cheap Sten mags (9mm) that work. I bought 10 mags last week from http://www.ohioordnanceworks.com/ and didnt have one issue with them i order 5 mags for $8 and 5 for $4.50 the mags for $8 were listed in good/great condition the $4.50 mags were not
pretty but operational. the total bill was around $72. if your looking for xtra mags for your MPA 30 these are the cheapest i've seen.
the mags on the top are the $8 one and the ones on the bottem were $4.50 as of last thursday 3-26-09 they had around 50 mag for $4.50 not sure on the number of $8 mags in stock.