This was my first Glock, and it may turn out to be my last. In fact, I might have already traded it off if I didn't think that having at least one Glock was a good idea. And after all, it allowed me to test the LaserLyte rear sight laser that I reviewed last week. But back to the gun... it's a single-stack 45, so it's not too thick while offering a nice wallop on the receiving end. Read the review to learn more.