*Single shot (But that's what you get with power in mind...)
Step 1: Modifying It
Pic 1: Take off the Y connectors and the other white rod.
Pic 2: Reverse the mag and replace the white rod with this piece connecting to the lower barrel.
Pic 3: Use 6 rubber bands. Place 2 on each side going below the 2 white rods closest to the back. Place 1 on each side going around the 2 white rods closest to the back and around the blue rod below.
Pic 4: Replace the taped green rod with a blue rod. Do this to each side.
Pic 5: It shoots these.
Pic 6: The power.
Pic 7: the back of the firing pin.
Step 2: Some Tips
When the gun is loaded, the firing pin may be tilted up a bit. Press it down and it will click straight.
I am not responsible for what you do with this gun. (I'm only saying that because this gun is badass enough to actually hurt someone, unlike some other shit guns i've seen with this message.)
EDIT: Use a strengthened grey rod as the firing pin. (Black rod) You will get twice the power.