NERF ELITE 2.0 DOUBLE PUNCH MOTORIZED BLASTER WITH RAPID ALTERNATING BARRELS: Double barrels! The Nerf Elite 2.0 Double Punch blaster features 2 barrels that rapidly move back and forth as you fire DOUBLE-CLIP BLASTING WITH 2 CLIPS THAT LOAD ONTO THE BLASTER AT THE SAME TIME: Double clips! Load both 10-dart clips onto the toy blaster and unleash 20 darts in indoor and outdoor games MOTORIZED NERF BLASTING: The Double Punch blaster features motorized blasting to unleash darts fast. Requires 4x 1.5 volt AA alkaline batteries (not included) 50 NERF ELITE 2.0 DARTS: The Double Punch Nerf blaster pack includes 50 Nerf Elite darts in 2 colors HELPFUL TIPS FOR BETTER PLAY: Here are 2 troubleshooting tips for you. Pull the trigger all the way back when firing to prevent darts from getting jammed inside. Make sure the access door is fully closed -- the blaster will only fire when the door is completely closed.