ARC-920 Railgun

You can find the instructions on how to build it hereRe-loadable Cartridges:Features a functional cartridge loading mechanism that can accommodate several types of payloads. There are cartridge cores for foam darts and 6mm BB's. Pneumatic Payload Delivery:If printed at full scale, the Railgun has an easy to assemble C02 delivery system that can fire cartridge payloads or produce a vapor firing effect. The system is trigger operated and can accommodate several sizes of C02 cartridges. There is a