I came a cross a website yesterday that had a break down of all the factory mods through out production of the glocks. And I forgot to save it. Does any body know that website or similar? It showed how the extractor changed during manufacturing, 3 pin verse 2 pin etc, etc. and it showed pics of the differences. I googled that last hour trying to save it and I wasn't on my labtop so I couldn't go in my history and find it. All I remember that it was 3 pages of Info.