1. Always Keep The Muzzle In A Safe Direction
This rule is the primary rule of gun safety; if it is never pointed at anyone, it can’t hit them, no matter if all other rules are broken. If you’re on a gun range, a safe direction is downrange, and either up, or down, or both, depending on the range’s rules. If you’re carrying a rifle or a pistol around, it’s the same; down or up.