That's why I mentioned police gun training is basically a joke. It's not like they have a PHD in gun smithing or anything. It's typically 90 minutes in class and then some range time.
Not sure where you got your information.. My basic police academy was 80 hours for firearms many years ago... Then we had classes to specifically go over any new weapons that were being distributed...
Heck even the reserve academy I went to when I was 21 was a full week of firearms...