Last reviewed: April 16, 2026 by Jake Terry, FFL07/SOT3 — reviewed at minimum every 180 days.
The Four Rules of Firearms Safety
Col. Jeff Cooper’s four rules are the safety backbone every credible firearms instructor teaches, including ours at Tatted Tacticals Firearms Training. They are deliberately short and overlapping so that breaking one still leaves three more in place. Learn them, practice them, and carry them with you every time a firearm is in your hands.
Rule 1 — All Guns Are Always Loaded
Treat every firearm as if it is loaded, every single time you pick it up — even if you cleared it yourself thirty seconds ago. “Unloaded” is a state you verify visually and physically each time the firearm changes hands or returns to your grip. If the rule feels paranoid, that is the point: paranoia here is protective. Clear the chamber, lock the slide or bolt open, and look.
Rule 2 — Never Let the Muzzle Cover Anything You Are Not Willing to Destroy
Muzzle discipline is a full-time job. The barrel is pointed somewhere at all times, and wherever it is pointed is where a round would go if Rule 1 turns out to be true. At the range, that means downrange; in the home, that means a safe direction defined in advance (typically downward into a basement or a designated backstop). Never sweep a person, a pet, or your own hand, ever.
Rule 3 — Keep Your Finger Off the Trigger Until Your Sights Are on the Target
Your trigger finger indexes along the frame, outside the trigger guard, until the moment you have made the decision to fire. This is called a register position. Adrenaline, surprise, and fine-motor loss under stress all work against you; keeping the finger out of the guard is the single most reliable defense against a negligent discharge when the unexpected happens.
Rule 4 — Be Sure of Your Target and What Is Beyond It
Rounds do not stop at the target. A 5.56 carbine round can travel over 3,000 yards. A handgun round can penetrate multiple interior walls. Identifying your target is step one; step two is knowing what is behind it — the backstop, the neighbor’s house, the family member in the next room. If you are not sure of the answer, you are not ready to press the trigger.
These Rules Are Not Just for the Range
They apply equally to the nightstand, the holster, the gun safe, and the cleaning bench. The moment you stop applying one of them, you are one small mistake away from an outcome you cannot take back.
Before your next range session, review our ammunition handling and storage notes. Before taking delivery on a new firearm, review our state restrictions — local laws add to, but never subtract from, the four rules above.