Just a question here, and I am not bagging on you in anyway, but why do you want a gen 4? I don't see any real upgrade to owning one other than the reversable mag release, which I don't need, and the ability to change out the back strap. Maybe you can change my mind.
I was under the impression that the gen 4's had reliability issues, which goes against what Glock has stood for for years. Again I am not bagging on you at all. Just curious.