I purchased my first Glock a couple months ago and I'm still new to the sport and obsession of owning guns Anyways, is there any rhyme or reason as to which Glock model gets its number? I understand the original 17 round Glock 17. Makes sense. But why is the smaller 19, a higher number? And why is the even smaller 26, called a 26? These may be dumb *** questions, but as I'm trying to learn about Glocks and which model is which, it would be helpful to have some understanding of the method to the madness.