This sophisticated motorized weaponry features a pivoting base, allowing you to instantly change the direction of fire! Hit your target every time with a rapid-fire barrage of shots that travel over 10 feet! Stun your adversary and take no mercy. Built from over 300 pieces, this machine fires balls one after another at a rate of one ball per second (12 balls included). VEX Robotics is dedicated to inspiring future generations of engineers and problem solvers through fun hands-on learning with its STEM based construction kits. This machine teaches important scientific principles to its builders such as linkages, reciprocal and projectile motion.VEX Robotics Ambush Striker is compliant with CPSIA standards.