The .40 extractor in a 9mm may just be a temporary fix. After 1000 - 2000 rounds have been fired, the problem may show up again.
Originally Posted by Arc Angel
...I've already tried this; and while it worked marginally well, at the same time, too much of the expended 9mm brass was getting caught and held onto by the tighter 40 caliber claw.
That seems reasonable it was designed for the .40, not the 9mm.
Someone correct me if I'm wrong here, but of the people having this problem, hasn't Glock fixed every one of them? Clearly, it took more than one try in some cases, but in the end, weren't all the problematic guns that were sent to Glock fixed?
That suggests that Glock does know how to fix the problem????