I modded it slightly. Credit for the base design goes to Jonaboy. I removed the orange tip to adapt it to smaller rubberbands.
Step 1: What It Looks Like and What to Change
For the original design, use search "jonaboy rbg"
1-Take the orange piece off the top of the original.
2-The two red pieces on the sides are to align the gun when shooting it.
3-Semi auto still works.
Smaller rubberbands can be used now
Sometimes all the bands will release at once due to an unknown reason. If someone finds out it was because of this mod, please tell me.