About this 3D model

The design is inspired by the Remington m870. It uses thin rubber bands for launching. Although it can only load and launch one shot at a time, it can be used as a tactical under-barrel accessory for other NERF toys for emergency situations ;) . Printing instructions: The layer height can be set at will. Model support is required. Refer to the STL file name for specific requirements. Hardware: The drawings are optional. 1-2 pcs m2*10 screws (m2*6 or m2*8 can also be used). If you don't have screws, you can use glue (it will be difficult to dismantle and replace the rubber band later). Simple demonstration: https://www.bilibili.com/video/BV1nG411q7ZA/ Installation instructions: https://www.bilibili.com/video/BV14u4y1g7VT/ Connecting rail usage: https://www.bilibili.com/video/BV14C4y1c79c/