The generation 3's are quite reliable with M3, M3X, and TLR-1's attached. Problems were extremely isolated. I suppose it will be a while before enough 4's are in use to see if they share the same excellent performance with lights. Of course, there are a lot of lights out there.
Your wasting your time OP. I can't get a straight answer. All I get is don't know, or there never was a problem with gen 3's or it was only a small problem that was fixed. blah blah blah. Then why do I have friends with new Gen 3's that jam with a X300 attached? So best advise I can give is to buy a gen 4 & see for yourself. This is what I'm doing. Have a gen 4 G22 on layaway.
Like the other poster said I don't think that there are enough of them out there that have had enough rounds through them with a light to know.
In armorer's course they said to use a heavier mag spring in the G22 if using a weapon light. That should fix any problems. Didn't talk much about the Gen4s but I would do the same thing.
This. Hundreds of thousands of rounds through gen 3's with lights, real world not internet. No issues. PM with further questions. As noted, it will take time to determine if Gen 4's enjoy the same excellent reliability with lights. Internet posts of cyber-results will come much faster. There were glocks that had malfunctions related to attached lights. Very few and far between. No reason to think that 4's will be any less reliable, but only time will tell.
If you know all of the answers you get are wrong, then you must know the right answer without asking, making your question pointless. Personally, considering how few police had problems, even though the G22 is about the most common single handgun model in American law enforcement, I have serious doubts that there was a real problem.
