Someone might as well be me will comment that you don't pull the weapon to kill. You pull the weapon to stop the BG from doing whatever the law allows you to use
'potentially' lethal force. But your goal is to stop, not kill.
It is assumed that the instrument used is potentially lethal and that is allowed by the appropriate law and that is an unfortunate and perhaps probable side effect of using that instrument.
There is a term for that - which I forget. Got it somewhere in a book.