I think these are a "Genuine" as any other XD magazine, just like all XD's are genuine HS 2000's to some degree. "PRODUKT KARLOVAC" means just what it sounds like: Product of Karlovac (which is the city in Croatia where the HS 2000 is manufactured). My guess is that Springfield, in conjunction with HS Produkt (company that manufactures the HS 2000/XD), is supplied with mags from that company. Some mags are getting the SA logo while some mags are merely unstamped. All the mags are apparently getting the same "Springfield Armory" ".45ACP 13rd" baseplates. The unmarked vs. marked mags are no less genuine than any other Springfield XD mag. This is particularly true because nobody who has posted about the differences in stampings on the mags has said that they are more or less reliable than the unmarked mags...both are 100% in terms of function. Same mags, same quality, reliability, etc...except for a roll-marked logo.