With the "Vortex" series Nerf is treading new ground. This blaster use no darts as ammo but fire small Frisbee-like discs made of rubber, which are provided with a foam edge, so called "XLR discs". These are not accelerated with air pressure but catapulted from the installed torsion spring directly from the barrel. Thanks to this technique, the Blasters achieve incredible range up to 15m. This fact and the unique science fiction optics owe the "Vortex" Blaster their enduring popularity.