The N7 Piranha is a shotgun. The N7 Piranha is an assault shotgun designed for the Reaper war. When the N7 program began training alien resistance forces, the lighter-bodied species wanted a low-recoil weapon with a wide pellet spread for dealing with hordes of husks. The result was the Piranha, which hit a sweet spot in close-range firepower. Its rapid-fire capability tears apart not only husks but most opponents unlucky enough to be in its way.