4-Barrel Blasting: The Tetrad QS-4 blaster has 4 front-loading barrels so you can fire 4 darts in a row at your targets EASY TO USE: Get blasting in 3 quick steps! Load the barrels, pump the priming slide back and forth, and pull the trigger to unleash 1 dart Includes 4 NERF Darts – Comes with 4 official Nerf Elite foam darts that are tested and approved for performance and quality and are ideal for indoor and outdoor Nerf battles Upgrade-ready blaster: The Nerf Elite 2.0 Tetrad QS-4 blaster has a tactical rail to customize the blaster for each battle or mission