My ccw class taught updated rules that I think are better:
1: always keep your finger off the trigger until you're ready to fire.
2: always keep your weapon pointed in a safe direction. (In a defense situation, the bad guy is a safe direction)
3: always treat as loaded until verified otherwise.(Some firearms need to be dry fired to be cleaned)
4: know your target and it's surroundings. You are responsible for every bullet that leaves your weapon.
(Formatting edit)
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