Shotgun

A shotgun is a weapon in the mirror universe.

In 2063, Zefram Cochrane used a shotgun to kill the first Vulcan who stood on the planet Earth. The crowd who had gathered to witness the arrival of the Vulcans to Earth also used shotguns to shoot the other occupants of the Vulcan starship.

In 2155, Captain Jonathan Archer, commanding officer of the ISS Enterprise (NX-01), owned Cochrane's shotgun. He showed it to the Vulcan officer T'Pol in an attempt to illustrate the fact that her people were under Human oppression, and that T'Pol was under Archer's command. (ENT: "In a Mirror, Darkly")

The name of this weapon was not mentioned in the episode and is taken from the script.