So i used that thread to figure out when my g23 was "born". I had purchased a used gun a few weeks ago. GREAT THREAD BTW Found out it was made in June 2008. Gen 3. My question is this, whats the main differences between the generations? Also, did i luck out getting a used gun that was only born a few years ago? is that common? I was happy when I saw that date because the guy at the store was trying to sell me on another one with night sites that was clearly older than the one i chose. I figured if i was gonna get night sites id wanna pick them out myself...so I got the newer looking "stock" gun.