The Equalizer

"That? That'll kill anything."

- God to Dean about The Equalizer

The Equalizer, also called The Hammurabi, is a gun crafted by God. It is supposed to be able to kill anything, except God himself. The gun uses no bullets, and instead "sends a wave of multidimensional energy across a perfectly balanced quantum link between whoever's shooting it and whoever they're shooting at".

Overview
God presents the Equalizer to the Winchesters and Castiel as the only weapon capable of killing Jack. However, whatever happens to the target also happens to the shooter, meaning that whoever kills Jack will die as well.

In a cemetery, Dean confronts Jack with the Equalizer, but can't bring himself to kill Jack to God's rage, instead dropping the gun. After he slipped his tongue and revealed that all of the events in the Winchester life just a mere "epic story", God begins smiting Jack, Sam grabs the weapon and shoots God, hitting God in the shoulder and injuring himself at the same time. However, the Equalizer fails to cause God any real harm and God decides to end the world, unleashing the souls of Hell upon the Earth, including many evils that were neutralized by the Winchesters in the past.

Physical Appearance
The gun appeared to be an ordinary modern gun made from silver and decorated by black engravings.

Powers and Abilities

 * Killing - Claimed by God to be able to kill anything, however it couldn't kill God himself.

Drawbacks

 * User Killing - God claimed that the gun kills the user by a perfectly balanced quantum link between him and the victim. However this only applies when the gun is shot towards someone it has the power to kill, since when Sam shot God with it, God didn't die and neither did Sam.

Appearances

 * Season 14
 * Moriah

Trivia

 * The Equalizer's very similar to The Colt.
 * Both are magical fire arms.
 * Both were believed to be capable of killing anything, and were disproven when used against a big bad: the Equalizer against God, and The Colt against Lucifer.