it's 10 to 1 odds that you wont have to hit him at all, as long as u get the gun out and "on" the attacker soon enough, get to cover, etc. You won't have to EVEN FIRE 80% of the time, and half of the time, if you do have to fire, just the MISSES will run him off. Half of the time, ANY sort of solid hit to vitals makes them QUIT ( NOT the same thing as a physical incapacitation) and 1/4 of the time, ANY hit, even poor ones, to limbs, etc, suffices) So it's EXTREME speed of getting gun OUT, and extreme speed at hitting, at very close range that matters. Just because some ignorant lames think otherwise doesn't change the facts of the situation. Sure COPS in uniform SOMETIMES have different parameters, but not one man in 100 is a uniformed cop. Not even one handgun owner in 50 is a uniformed cop. So the odds are VERY hight that I am right about what MATTERS.