For the ultimate in high-performance sports action, it’s Nerf or Nothin’! Build and customize for any mission or battle with the Nerf N-Strike Modulus system of blasters, upgrade kits, gear, accessories, and darts. Fire up the action with the Modulus Mediator blaster core, which is part of the Mediator Series and can be upgraded with the Mediator Stock and Mediator Barrel to create the Mediator