If you still didn't get that, this firearm is not a shotgun, it is not a short-barrel shotgun, it's not a short-barrel rifle, its not a short-barrel pistol....
If you’re into short barrel and Glocks then you may want to get a modifying kit for the Glock. CAA has a conversion kit that converts your Glock into a carbine. (sort of) Its aluminum and polymer RONI unit doesn’t add...