This is a gun I made about 2 months ago. It shoots 8 green rods. The distance is determined by the rubber bands you use. I made a sub machine gun because I didn't have enough pieces To make a machine gun and I didn't have a good enough motor.
The one bad thing about it is that it does not have a trigger. If you come up with a good trigger PLEASE let me know before you post a mod.
Pic 1: side
Pic 2: front
Pic 3: back
Step 1: Make Body
Pic 1: Make 2
Pic 2: Make 2
Pic 3: Make 2
Pic 4: Make ( The long rods are yellow)
Pic 5: Make 2
Pic 6: atattch with blue rods
Pic 7: atattch part in pic 4. Also add 2 gray rods.
Step 2: Make Barral Part
Pic 1: make 5
Pic 2: add blue rods
Pic 3: add second panel
Pic 4: add block triggers
Pic 5: add third panel
Pic 6: add fourth panel
Pic 7: add fifth panel
Step 3: Add Firing Pins
This is the step where you add the firing pins. This step is also the hardest to follow.
Pic 1: make 8.
Pic 2: add orange connectors.
Pic 3: add rubber bands to firing pins.
Pic 4: put firing pins in holes.
Pic 5: atattch rubber band to the tip of the blue rod.
Pic 6: put the whole mechanism on a yellow rod, add spacers, and atattch on the orange connector.
Step 4: Loading and Shooting
To load: First do as in first pic, open up the top. Now you can spin the mec without it firing. Now pull back all of the firing pins and the triggers should flip into place if you put the rubber bands on right. (look at pic 2 (cocked)). Now put the bullets in the barrels and close the top. To fire hold the handles and use your right index finger to push down.
If you don't understand anything let me know.