This is a silencer I made for my Airsoft gun. Made of two toilet paper rolls, one shortened a bit to make it the right length. Wrapped in duct tape, with bits on the rear end to make it stick to the gun (not messy bits all over the place though). Amplifies the sound of a dry fire because it's empty right now, but increases accuracy of shotgun style firing (when you cock the gun multiple times to load more BBs into the chamber). I might put paper in to make it actually silence the gun.
This does not make my gun any quieter (for now anyways). It's just for looks, I guess.