Noun
An electroshock gun; a taser; a stun gun.
A gun with electrically powered components, such as the reloader or barrel rotator.
A gun that uses electricity to vaporize water as the propulsive force on the ballistic projectile.
A gun that uses electromagnetic, electric or magnetic force to propel a projectile.
A railgun (electric propulsion gun).
A coilgun (magnetic propulsion gun).
A type of ray gun
Source: en.wiktionary.org