Lupara

Lupara is a sawed-off shotgun.

Description
A small shotgun identical to a man-crafted, with a dark body and lighter sides. When Kayo utilized her Lupara in combination with her cogitation, she proves to be extremely skillful, defeating a Gastrea in a single shot.

Trivia

 * Lupara is an Italian word used to refer to a sawed-off shotgun of the break-open type. The name refers to the original use for such weapons, which were carried by shepherds in case of wolves.
 * Strangely enough, it's appearance seems to resemble more like the Winchester Model 1887, a lever-action shotgun rather than a double barrelled shotgun.