I have ordered several magazines from Numrich for mine. They are aftermarket but I have had good success with both the .32 and .380 mags.
They are not marked with a manufacturer so I'm not sure who made them.
I have not checked lately to see if they have any in stock.
They are also NOT cheap. (but, since the gun was free, you may not mind)
And, on the .32 I had to file a couple of thousanths off of the base to get them to fit