Wrist Mounted Airsoft Crossbow

Hello thanks for looking at my design. this is my first design that i made completely by myself.

I made my own supports because the ones that my slicer program caused imperfections in the barrel. I used small rubber bands as the strings to allow the bolt to be pulled back far enough to let the BB fall into place. with just 2 bands it can shoot 15-20 feet but i have tested it with more powerful.

Feel free to download, remix, and tip. please enjoy and avoid shooting peoples faces