Ooooo. Step back, Jack. This one has the taser ignition. Not only that, this dude give you desert decal instructions and ways to camo your potato gun. This potato gun tutorial is pure instruction, in two parts. Kudos. Watch this nifty weapon hack to learn how to build a potato gun launcher with interchangeable barrels. This potato gun "spudzooka" with interchangeable barrels is powered by taser ignition. It also resembles those bazookas and RPGs causing so much havoc on the world today.