I have a G17 that I use for IPSC(production). I want to use my G19 for IPSC(production class), but only have 2 mags for it. Should I buy G17 mags for my G19 or actual G19 mags. Yes they extend below the grip, but this would allow me to use all my mags for one gun or the other. The G19 mags dont fit in the G17. What do you guys recommend? Is there a grip extension for the G19 that would cover the G17 mag as it extends below the grip?