Taser.

Background
A weapon that capable of stunning an enemy at a close range with 50,000 volts per stun, It is used more by people who have bought it for defense.

Trivia.

 * It is a stun weapon capable of stunning the killer.
 * It has a cooldown of 25 seconds and the killer will be stunned for 3.5 seconds.
 * This weapon is the first to be added in wikia.