I don't mean to get off on a rant, here, but the 48 runs fine with factory 10-rounders, and Glock also makes a 4" gun that runs like a top with 15-round mags and has been more or less the industry standard for a reason.
"But have you tried...?" Hey, if I wanted to maybe have to dick around with a gun to make it run reliably, I'd buy a Kimber.
I thought the whole point of a Glock was to pull a soulless piece of combat tupperware out of the box and get to blasting with no more preparation than stuffing rounds in the magazines?
Messing around with sights or trigger shoes is one thing, adding a magwell or a Gadget or a backstrap plug doesn't affect reliability, but magazines? I have yet to run across an aftermarket Glock magazine I'd entirely trust for carry. Maybe Magpul, but only if I absolutely had to, and I'm having a hard time envisioning a scenario where I had to.