I came across this link on another forum. http://www.thegunzone.com/glock/phase3.html I've never heard of this and don't understand what the issue is. Why couldn't you clear by pulling the slide back? I have a gen II for about 10 years with 20k+ through it. Never had an issue. Now that doesn't mean much; certainly doesn't mean this isn't true, just that I'm lucky. Anyone have more insight into this? Maybe a serial number run that I can check?