BOOMco. Smart Stick Rounds with Magazine Accessory Smart Stick Rounds and Magazine amplify your experience on the battlefield Made completely of Smart Stick material, they stick to all BOOMco.targets and shields 2" ball-shaped projectiles come in red and green Mix and match the colors and create a customized Smart Stick experience! Comes with 3 Smart Stick Rounds and a magazine that fits the rails of most BOOMco. blasters