Energon Prod

The Energon Prod can be used to electrocute enemies. It seems to have multiple strength settings that can knock out, paralyse, and just plain induce agony in both organics and Cybertronians.

Super Dion Bros: United comic
Even unknown to us now, since the weapon didn't appear in War For Energon while Knock Out himself did, it will most likely be used by him in this series.

War For Energon comic

 * Knock Out (presumably)
 * Radical (has been confirmed in off-screen conversations)

Super Dion Bros: United comic

 * Knock Out
 * Radical
 * Kayo

Super Dion Bros: Galaxy Force comic

 * Knock Out
 * Terradive
 * Radical
 * Kayo