ROKR is a DIY wooden 3D puzzle craft kit. The package includes a set of wood sheets with 275 precisely laser cut pieces that assemble together to form your own rubber band gun. 10 wooden bullets are included in the drum magazine and the shell ejection starts after pulling up the firing mode lever. When shooting, the bolt drives the ejector rod to make"shell casings" eject constantly. Filled with flexible rubber bands, the bolt handle moves forward and backward to simulate the recoil. The item has been designed to target wide range of audience - ranging from hobbyists and puzzle builders to teens and adults who just loves making things! It can also become a great bonding project with smaller kids as a helper to find the right parts and teach them with how gears work. There are no scissors or any other tool required for assembly as all the parts fit together and lock themselves in without any glue. Assembled size (estimate) : 27.5" x 5.4" x 7"