Kids can upgrade their blaster for any mission or battle with the Nerf Modulus BarrelStrike blaster. This 4-shot blaster converts to a barrel attachment. Use it on its own to blast into battle, or attach it to a Nerf Modulus blaster (sold separately) as a barrel extension. As a blaster, it can hold up to 4 darts and fires one at a time. Flip the end up to convert it, and attach it to the barrel of a Nerf Modulus blaster when the mission calls for long-range blasting. Includes 4 Elite darts. Expand the customizing options with Nerf Modulus Upgrade Kits and accessories (each sold separately); with the full Nerf Modulus system, over 1000 different combinations are possible!