This is a weapon I have designed for my Honours Project at University. It is a makeshift projectile weapon set in a post-apocalyptic world where the only way to survive is the hand craft weapons and gear out various items within your environment.
This weapon is crafted out of PVC tubes and other materials found at a hardware store. It fires rock-solid sweets (such as gobstoppers, pinballs etc.) which would be found in a sweet shop which can all be found at a shopping centre.
The weapon is based on the concept of a DIY Potato Launcher.