Which of the following is NOT one of the 10 rules of firearm safety?

The rule regarding buying the most expensive gun is not one of the ten rules of firearm safety because firearm safety focuses primarily on responsible handling, storage, and operation of firearms, rather than the cost or brand of the firearms themselves. The primary aim of the ten rules is to promote safe practices that protect the individual and others around them while using firearms.

The emphasis of firearm safety protocols lies in practices such as unloading guns when not in use, avoiding pointing a gun at anything you do not intend to shoot, and securely storing firearms and ammunition. These guidelines are designed to minimize the risk of accidents and ensure that all firearm users prioritize safety over considerations of market price or product prestige.