Executioner

"Double-action revolver pistol. Fires 28 gauge shotgun shells."

- Description.

The Executioner (originally known as the Raging Judge) is a revolver that appears in Call of Duty: Black Ops II.

Zombies
The Executioner appears in Zombies.

Trivia

 * The word 'Executioner' is visible down the side of the weapon's barrel.
 * The Executioner is the first pistol/non-shotgun to fire shotgun shells in the Call of Duty series.
 * YouTube entertainment channel "NextGenTactics" (NGT) displayed and described the Executioner as a one-shot kill at point-blank range, while at medium to long ranges can easily take four to five shots to get the kill (very useful information to know because the weapon only holds six shells in the chambers at fully reloaded capacity).
 * The recoil is extremely high along with a dramatically slower firing rate compared to the other pistols in Black Ops 2, although damage is of course higher. (via NextGenTactics).