Do you guy have any plans to modify the extractor so it maintains a hold on the rim of the case? I think an improved extractor will increase reliability. also, the stamped extractor is rough (rough pointy edges) and wear that I have seen along the extractor groove in the barrel on my GSG-5 matches the rough pattern on the extractor.
I will try to get some detailed pics of my extractor when I get home.
for every one that reads this and thinks the extractor is the part that is riveted into the receiver you are thinking about the ejector. I see the two terms used incorrectly when discussing this particular firearm for some reason.
I modified my extractor to hold an empty casing firmly on the bolt face, and it really does cut down on stovepipe jams.
It's pretty easy surgery if you are confident with tools; take the extractor out, secure it in a vice, heat the end red hot and tap it with a hammer to close the hook just a fraction. Stone it smooth, test fit (rinse & repeat as necessary), then heat back to cherry red and quench in oil to re-harden.
ETA: I used basically the same procedure described here
for the 10/22 platform on the GSG extractor.