Steyr GB pistol... 18 round mags in 9mm

1st question is: Where can I find these mags? I've tried This site, GA and AA. Shotgun news, Gunlist and Jerry's sports guide, were no help either.

2nd question is: Do any of the mags for the latest pistols like Steyr's M-9 and others..fit & feed the Steyer GB model?

Thanks,The Fox

Keep your powder dry