Which of the following is NOT one of the four universal weapons safety rules?

The correct answer identifies a principle that is not included in the universally recognized set of weapons safety rules. The four universal weapons safety rules emphasize handling firearms responsibly and safely to prevent accidents.

The rule about treating every weapon as if it were unloaded is foundational in firearm safety; it instills a mindset of caution and respect towards firearms, regardless of their condition. Focusing on keeping fingers straight and off the trigger until ready to fire helps prevent unintentional discharges, which is crucial in maintaining safety. The principle of never pointing a weapon at anything not intended to be shot reinforces the importance of muzzle discipline, thereby reducing the risk of harm to others. Keeping the weapon on "safe" until actually prepared to fire is equally vital in ensuring that a firearm remains in a safe state until the user is ready to take action.

Understanding these rules is essential because they are designed to minimize the risk of accidents and injuries associated with firearms. Therefore, the option noted does not align with the established framework of the four universal weapons safety rules.