Colt 1851

Colt 1851 is a gun that fires a burst of two bullets.

Trivia

 * The description and pickup quote are referencing the gun's use in the film, The Good, the Bad, and the Ugly.
 * This gun is used in The Hunter's past.
 * Given such, it's likely that her starting pistol is an old and rusty version of the Colt.
 * The name and design of this gun is based on the Colt 1851 Navy revolver.