Additional Details ------------------------------ Product description: Pile targets, easy or hard, aim and shoot, near or far. In this latest Smartivity STEM DIY construction activity toy, children can construct a fun and engaging shooter with multiple rapid-fire rounds to shoot and knock down targets of various weights. The kit contains all the elements essential to build a fully-functional disc shooter with a 20 Round magazine, richly-illustrated and easy-to-understand step-by-step instruction booklet and tools to understand important concepts in a simple and engaging manner. Using this Smartivity STEM, learning, educational and construction activity toy your child will learn concepts like momentum, stability, inertia and elasticity.