Build a customisable blaster with the NEW Lever-Action RotoChamber; The NEW Lever-Action RotoChamber allows you to rapidly fire up to 5 darts without reloading. Set includes KNEX rods and connectors plus special parts to create different blasters: 1 NEW Lever-Action RotoChamber plus 1 quick fit grip in metallic copper; Build and rebuild by downloading instructions for 4 additional blasters and targets. Most models can be built one at a time. Compatible with the entire K-FORCE Build and Blast line. Size H22.86, W5.08, D40.64cm. For ages 8 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use. To be used under the direct supervision of an adult.