Since Mec-Gar makes CZ mags, does it really matter what is stamped on them?
When the SP01 first came out, the 18-round CZ-brand mags were like $50. I see now that Mec-Gar puts their own name on the exact same mag, and charges half the price.
Maybe CZ and Mec-Gar have a deal that for the first few years of any new CZ pistol model, they can't sell mags independently. I hope so anyway. I'll stock up on P-09 mags in the year 2020.