About this 3D model

Update 2026.4.28 F3D file uploaded! U can adjust the paraments by yourself! I was always dreaming about this! I made parameters editable already but makerlab couldn't support f3d files by that time and the chance finally came Materials needed: M3x4 set screws x2 M3x2 set screw x1 Description: I used to consider printed rifling a difficult, even impossible(if you pursue a good effect) task for FDM because of layer lines. So I made quite many SCARs out of low friction fishing thread. but I am not satisfied with the strings pulled straight. I wanted curved riflings sticking to the barrel. then I gain inspiration from group chats well, though I tried, my FDM was not able to process a groove for strings with 0.5mm diameter. I eventually made this. print rifling seperately in a direction that completely avoid layer lines, shown as the screenshot (wrong printing direction for the cap, I just realized it when typing this) and don't forget the cap or they might fly out together with darts(though I've never seen that happen without the cap)