Both 'stun guns' and tasers use essentially the same electrical method of gaining their effect.

There are claims that the waveform is different but both are mainly high frequency, high-voltage, low-amperage discharges. Stun guns do not rely on "pain". Both disrupt normal neural activity and disrupt and potentially exhaust the electro-chemical mechanism of muscular contraction. Doing it by over-driving it.

The only substantial difference is that the stun gun depends on exposed studs to make the connection while a taser uses darts that much more reliably make a good connection.

The advantage of a taser is it is less likely to be thwarted by heavy clothing and, being a projectile weapon, gives you some distance. The effect of a taser is often m