Rival Nerf Nemesis
Details
The Nemesis MXVII-10K is a fully automatic blaster. It features two tactical rails: a long rail on top of the blaster and a smaller one below the muzzle. On either end of the top rail are integrated, flip-up sights.
Unlike previous blasters, the Nemesis uses a large removable hopper with an agitator that advances the rounds into its flywheels. The feeding mechanism will not operate when the hopper is removed.
Content and Image Credit: http://nerf.wikia.com/wiki/Nemesis_MXVII-10K