I believe the issue of Glock KBs that are not absolutely ammo related, are probably more how a gun handles high pressure. I gave up a much liked Glock 30 when the 45 KBs started surfacing. No I didn't believe it was going to KB, but guns don't always scale up the same: compare a .40 HP with the original in 9mm. I am not sure if they can beef up a polymer frame in the event you get some off spec ammo. My take is that Glocks are best in 9mm packages. If nothing else stay away from cheapo ammo.
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