Although I am not a professional, like you, I have never had the problem mentioned by the poster. I bought my Glock in the early Nineties; it has a three-digit S/N. It performs especially well with a 124-grain FMJ ammo.
Hey good to hear about an M36 out there! I added a one-round magazine extension (with the pinky extension) so I could hang on to it better. There are always trade-offs aren’t there? That tiny extension protrudes just enough to be noticeable in some concealed carry situations!
12Gauge, one thing about a Glock, the darn things will sure go bang everytime, at least in my experience. During that transition training, we were reloading magazines from a large ammo box of loose rounds of ALL makes and types of bullets (FMJs, HPs, everything out there in the market), we were not allowed to clean the pistols during the entire 3 day training period. If they were dropped or thrown out on a quick draw scenario (some hilarious events with that) we could blow the dirt/dust off but had to continue firing that sequence, no alibis.
The purpose of that segment was to develop trust in the Glock and try our best to cause a malfunction, that’s what the transition team strove for (one was a Glock rep.).
No misfires, amazing. If you “weak arm” a Glock while firing (not lock your elbow) there is a possibility of your arm “following the recoil” causing a stovepipe jam. In our training class of nearly 30, once we caught on to that technique there were no more stovepipes, what amazed us more was that dirt/dust/mud and grit were not an issue.