Angel-Killing Bullets

Angel-killing bullets are bullets forged from melted-down angel blades.

Episodes

8.21 The Great Escapist

Crowley appears before Naomi, shooting and killing an angel with a gun. He reveals to Naomi that he had his "R&D" people melt down an angel blade into bullets. He threatens and shoots at Naomi, who teleports away. With Castiel now in his custody, Crowley shoots him in the gut and has the angel Ion take Castiel to his office where he finds the angel tablet hidden inside Castiel's vessel.

After being left alone with Ion, Castiel digs out the bullet from his abdomen, and attacks Ion, driving the bullet slug through his eye, killing him.

12.23 All Along the Watchtower

Upon meeting the Apocalypse World version of Bobby Singer, Dean is excited to learn that Bobby's machine gun "Rufus" uses bullets cast from discarded angel blades.

Later when Sam, Dean, Castiel, and Crowley enact their plan to trap Lucifer in Apocalypse World, Dean borrows "Rufus". Pointing it at Lucifer, he tells him he has a bet on whether it will work on an archangel and begins unloading on Lucifer. The bullets prove ineffective as Lucifer is able to easily brush off the attack.

13.18 Bring 'em Back Alive

After being ambushed by a bounty hunter, collecting humans for the angels. Dean and Ketch overpower the man, and take his gear. Ketch remarks on the weaponry's cutting edge, and how he does not even recognize the angel-killing bullets.

Now armed with guns and angel-killing bullets, Dean and Ketch attack a POW camp where the Apocalypse World version of Charlie Bradbury is being prepared for execution. As the executioner is prepared to deliver his killing blow to Charlie, Dean tosses a grenade before he and Ketch rush the entrance, shooting and killing all the angels in their path.