the glock 22, 23, and model 27 are .40 glock Semi Automatic Pistols. I just purchased a glock 23, and must say it is a lot nicer and more fun to shoot, then my Beretta M9 (92FS).
I love the Glock 22 23 and 27.
I bought the compact .40 glock 23 yesterday and damn was that a big hole in the target. Glock model 22 is full size, and the 27 is a subcompact.