Maybe the Gen4's are running fine, But I have a Gen3 with the new current non-dip extractor..Guess what? I still get hit with brass.. not often, but often enough to be annoying. And NO, I'm not sending it back to Glock..Reading this thread, it seems they have a pretty good track record of NOT fixing anything..If Randy's extractor dosen't cure it, I'll dump it off at a gunshow and move on..It's that simple.