This Nerf Rival Kronos XVIII-500 is part of the Nerf Rival series and shoot the ball rounds. The blaster is a single shot 5 round internal mag. blaster and has great accuracy. The blaster is loaded by setting the priming slide in the back position and loading the rounds into the flap on top of the blaster. The blaster also has a safety switch on the left side of the blaster near the trigger allowing you to lock the trigger to prevent any accidental misfire. This blaster has lots of power and the iron sight is very accurate from my experience. The blaster will come with 10 Nerf Rival rounds that have all been tested with the blaster.