The dreaded Glock ejection issues

[BuffCyclist]

One last thing, I assume this is with factory ammo? I only ever have this problem with weak extraction when I use my reloads, which I usually load lighter because 1) thats the charge they're most accurate at and 2) its easier to pickup brass when its 2ft away and in a nice pile.

If you really don't want to send it back, you could always try stretching the extractor spring just a tiny bit to make it slightly longer, increasing the spring force, though I don't know if that'd help at all.

Not sure how much it would matter, but is the recoil rod/spring factory and look okay? If you have another glock you could pilfer one from, try that too. It seems to me that if that is too stiff it'd cause the action to cycle slower and with less force on extraction. But that shouldn't be the new Gen4 style (double spring) so I don't see how that would be it. I heard the Gen4's had a lot of problems with 9mm extraction because of that double recoil spring.

I know how much a malfunctioning glock can be (old G22) so I feel for you. Hope you get it sorted out quickly!

eta: I'm no glock expert, just tossing ideas out there to help cover all angles and maybe spark an idea in someone else's head.