it came in a california legal configuration with a fixed 0 round sled mag, however, it also came with a 10 round mag. I purchased an MPA30T, and it came to my FFL dealers shop today.

I have an update on my situation with a california legal MAC clone.

(and if you find out you can, send me a PM - I have some grease guns mags laying around) If you can find a dealer willing to bring one in, and obtain some grease gun mag parts kits, you might be able to make this work. Look on page 54 of the PDF, and it lists mac types - I don't see MPA on the list. I poked around a bit after typing the above, and found this document: You could obtain some grease gun magazine parts kits and pin them to 10 rounds, if it turns out the MPA pistols without threaded barrels are not banned by name. I'm fairly sure the only manufacturer producing semi-auto mac-10s is Masterpiece Arms, and their guns use M3 'grease gun' 30-round magazines.

As far as I can tell by a little bit of reading, they don't have features that would render them automatically banned - with a 10-round detachable magazine, in the pistol grip, without a threaded barrel, they should be legit. All the semi-auto Mac 10 clones are probably prohibited by name.

Mac 10 semi auto sale