I was looking at some Glock’s today and I found some different features from my own, I do believe my Glock is a gen. 3.5. I noticed that these Glock’s had rounded front ends and the slide lock lever had more to it, kind of hard to explain but there seemed more to grip. It wasn't bigger but the lever stuck our just a bit. Sorry I tried to find a picture but no luck. They were the regular barrel size and they came in all calibers.
