This papercraft is a M-11 Wraith shotgun, based on the game Mass Effect 3, the paper model created by techdollogic. The Wraith is favored among mercenaries, pirates, and slavers in the Terminus systems. Its high-impact damage and sturdy construction make it a popular "quick-draw" shotgun. A variant of the M-22 Eviscerator, demand for the Wraith is higher than ever, even though the weapon is banned in Citadel space. In order to lighten its weight, the Wraith holds fewer shots than the Eviscerator.
You can download this paper craft model here: Mass Effect - M-11 Wraith Shotgun Free Paper Model Download