Product Details With the motorized Modulus ECS-10 you can build your own Nerf N-Strike blaster. Use its many removable parts to customize the blaster in over 30 combinations. With a targeting scope, drop grip and dual-rail barrel, you’ll be able to create a blaster that can handle any battlefield. Once your configuration is complete, load up the Modulus ECS-10's banana clip with the included darts and take out the competition. Requires 4x AA batteries. Can supply a 10 Pack of AA Batteries for an additional £