In the video game Fallout 4, you play as a survivor of a nuclear apocalypse, tooling around a ruined Boston and generally raising hell while trying to survive the wrath of giant mutated bugs, Mad Max-esque raiders covered in rusted metal armor, and constant whining from Boston's human denizens about helping their settlements or some crap. There's also a bit about finding your lost son and intervening in some kind of robot/human conflict but frankly that's kind of boring and not really the point here.
Anyway, in Fallout 4, you can procure this gun called the Junk Jet.