KSC MP7 mag dimensions

[Alias]

Just a quick one. I've had my KSC MP7 for nearly 2 years now and I've got 4 spare mags and I've used so many methods of carrying them. I've used P90 mag pouches stuffed with socks, pistol fast mags but that hang forward due to them being top heavy, drop leg MP5 mag pouches but this is to heavy web running, open top M4 mag pouches and 4 AK triple mag pouches (1 per mag). My idea now is to make a Kydex holster for them to be belt mounted or molle mounted. Now I'm willing to make all the presses and buy the oven, clamps, sander, pressing jig. But my questions to u guys are

1) are KSC mags the same dimensions as the real steel (as I may of sourced some real steel kydex holster)

2) if I make my own will the mags survive the 350C press (probly not)

3) what alternatives you suggest

Cheers

Adam (Alias)