This gun came up by betting my brother that i could make a gun with less pieces than him. He won the bet, and this is how he made the gun. It only has 2 pieces but it can shoot really far (i haven't measured yet). The second picture is my brother but the image notes wont work.
Step 1: The Things You Need
You will need:
1x Snowflake connector
1x Yellow or Red rod
1x Big thick rubber band
If you use yellow rods it wont shoot as far but is easier to shoot. Red rods are basically the opposite.
Step 2: Putting the Bits Together
Put the rubber band over the snowflake connector and your done! =D
Step 3: Loading and Firing
Put the yellow or red rod through the hole in the snowflake connector and push it back. hold onto it from behind where the rubber band is, aim at something and let go. its that simple!