If you’re shopping for a non-lethal self-defense tool, you’ve probably noticed “TASER” and “stun gun” used almost interchangeably. They’re not the same thing, and the difference matters when you’re deciding which one actually fits how you’d use it.
The short version
Every TASER® device is technically a type of stun gun, but not every stun gun is a TASER®. TASER® is a brand name for a specific category of electrical weapon — a conducted electrical weapon (CEW) — that has become so well known it’s often used as a generic term, the same way people say “Kleenex” for facial tissue. The real distinction comes down to how the device makes contact with an attacker.
How stun guns work
A stun gun is a direct-contact device. You have to press it against an attacker’s body — typically for one to several seconds — to deliver a painful electric shock that disrupts their muscle control and gives you a window to get away. Because there’s no distance component, stun guns are compact, rechargeable, and can be used repeatedly without replacement parts. They’re generally the more affordable option, with many models available well under $50.
How TASER® devices work
A TASER® device works from a distance. It fires two small probes connected to the device by thin wires, and those probes can attach to a target’s body or clothing from several feet away — consumer models typically reach up to 15 feet. Once the probes make contact, the device sends an electrical signal that interferes with the muscles’ ability to function, which is generally more effective at fully incapacitating someone than pain compliance alone. The tradeoff is that the cartridge holding the probes is typically single-use, so replacement cartridges are a real ongoing cost, and TASER® devices tend to cost significantly more upfront than a basic stun gun.
Side-by-side comparison
Range: Stun guns require direct contact; TASER® devices work from several feet away.
Reusability: Stun guns can be used repeatedly on a single charge; TASER® cartridges are typically good for one or two shots before they need replacing.
Cost: Stun guns are generally the budget-friendly choice; TASER® devices cost more but add standoff distance.
Best for: Stun guns suit someone who wants a simple, low-cost, close-range deterrent. TASER® devices suit someone who wants to stop a threat before it gets within arm’s reach.
Which one is right for you?
There’s no universally “better” option — it depends on the scenario you’re preparing for. If you want something small to carry on a keychain or in a bag for close encounters, a stun gun is a practical, affordable choice. If keeping distance between you and a threat matters more to you, a TASER® device is worth the extra investment.
Whichever you choose, laws on ownership and carry vary by state and sometimes by city, so it’s worth a quick check of your local regulations before you buy — we cover the general landscape in our guide to stun gun and TASER® laws by state.