The Colt

The Colt is a revolver that John Winchester had been searching for for many years. They finally obtained it after a vampire killed the owner and the Winchesters attacked the vampire's nest to get it back. It was made by Samuel Colt during the siege of the Alamo, and according to legend it could kill anything. It is embellished with pentagrams and other counter-demonic symbols. John Winchester wanted to so that he could use it to kill the demon that killed Mary Winchester. Dean Winchester ultimately accomplishes that task. The Winchesters use it to kill other demons and vampires. However, it fails to kill Lucifer, who adds that there are 5 things it cannot kill, one being himself. Because Lucifer cannot die from the Colt, it can be assumed God, and Michael cannot be killed by the Colt too. It is worth noting that there are four major Archangels and God that in total make five figures: God, Michael, Lucifer, Raphael, and Gabriel. However, the colt also cannot kill any of the Four Horsemen of the Apocalypse. It originally came with 13 bullets. Eight were used before the Winchesters obtained it, and they used the other five. It then no longer worked, but the demon Ruby "fixed" it so that it could kill anything using ordinary bullets. The gun was stolen from them by Bela Talbot in order for her to get out of her contract with a Crossroad demon. She told the Winchesters that is what she did with it, but in fact she instead gave it to a demon named Crowley.

The Colt has a second function: the barrel of it acted as a key to unlock a Gateway into Hell, as seen in the episode "All Hell Breaks Loose - Part 2"

Use of the Colt
The following denotes the known uses of the Colt with the original "Samuel Colt" bullets shown in Grey.