I agree with GaryVA, law enforcement, military tested and made decisions based on a plethora of reasons. We can dissect these decisions into minutia as old men sometimes do, but it is what it is. I like the 9mm with good bullets, I like the 45 as well but the 9 is fine for lots of reasons. Again just another old mans opinion. I will be taking another training class in January and will use a G43 that is a carry gun that works well for me.