In my opinion, you’ve made excessively narrow classes, separating out the Glock 26, 19, and 17, when they are merely three barrel/grip length variations of the same gun. It would be almost like considering 2.5” 4” and 6” Model 10 S&Ws, along with separating them out based on round or square grips, several different guns when you calculated stats on the most popular revolver models of the 1970s.
