CDNN has been advertising used 40 mags (11 rounds) for $15, BTW.

There are some other guns that use 59-style magazines (of various heights/capacities), like the P11, Sub-2000, LH9, and some older stuff like the camp carbine and god knows what. That ought to help keep production costs down for Mec-Gar and keep availability up.

I did notice that Beretta 92 mags fit and feed in the 59 (at least cycling by hand). You would have to cut a new notch for the magazine release and modify or swap the follower, though. I would reserve that option for a very rainy day.

Makes me wonder what other crazy options are out there?