Originally Posted by MacCool

The most famous problems were with the recoil springs on the Gen 4. Replacing them has pretty much fixed that problem, but the ejection problems remain. Randy Lee (Apex Tactical) has had hit-or-miss success with replacing the extractor relative to stopping the stovepipes, but the ultimate solution to kicking those casings well out to 4:00 where they belong appears to be lowering the ejection port too. He just moved Apex into a new facility and is still setting up so they're not doing any work just yet, but he's looking at developing a new machined extractor (instead of the current MIM version or the previous cast design - both of which have been problematic) as well as offering slide milling services.

I'm relatively new to Glocks but I confess I find the erratic ejection annoying. I don't get as worked up about it as some of the ninjas over at M4C, however, as long as its not associated with malfunction.