9x45 -
I was answering a general question in general terms (and largely off the top of my head). I was not writing a treatise on the development of Glock pistols (complete with footnotes, references and a bibliography), nor was I claiming in final word/authority on the issue of the various generations of Glocks. I believe I fairly accurately anwered the original poster's questions, and I don't see where you've added anything to further answer the question or clafiry the issue (and to be honest, I don't know what your "issue" is with my response). It would be nice to be able to answer a simple a question without having it turn into a "Glock Debate." Do you have any further specific information on the changes between the various generations of Glocks?
Actually, I have owned and shot several Glocks including the 17, 23, 26, 27, 30, 31, 32 and 33. There's a lot I like about Glocks, and there's some things I don't like about them, but I absolutely do not have the blind faith in them that is so common among glockaphiles. I really regret selling my 17 (a nice factory refurb that came with two hi-caps, I had two more)--I thought I wanted something smaller. I don't miss the 23--even from a rest the best group looked like a modified choke shotgun pattern. I liked the concept of the 26/27/33, but the geometry/ergonomics are just plain wrong for me (believe me, I tried). The 31 couldn't get through a magazine (10-round or hi-cap) without two or three FTEs (probably had the wrong ejector as a guess). I liked the 32 even--in fact, I sold it to my brother, along with three hi-caps, several years back when he got his carry license. He loves it, carries it almost everyday, and I still get to shoot it occassionally. So, yes, I have actually owned and shot Glocks (and I remember the "voluntary upgrade"). BTW, I don't consider the problems I had with the 23 and 31 typical of Glocks, but just a couple of bad specimens (the 31 was a very early issue of that particular model).
FWIW, here's one link for you. It took me about 30 seconds to find it, and that's about all the time it is worth to me. I would suggest in the future you might try to do your own research.
http://communities.prodigy.net/sportsrec/glock/gz-gupgrade.html