Basically A giant slingshot. THIS IS ONLY A BETA VERSION. A better one will come soon. It's similar to Oodalumps's cannon.
Step 1: The Top Piece
This part is required for the gun to work.
Step 2: Extra Length
What makes the gun so deadly is the extra barrels. At least 4 are recommended.
Step 3: The Bullet
This is the big boy we're gonna fire.
Step 4: Loading and Firing
To load, put the bullet in the rails. Hook the rubber bands on, pull down, and release.