The Backyard Scientist shows off his propane rifle. All you need to take is a trip to the hardware store and you can have your own!
He then takes his design a step further and creates a golf-ball launcher.
Live the AGG Life
The Backyard Scientist shows off his propane rifle. All you need to take is a trip to the hardware store and you can have your own!
He then takes his design a step further and creates a golf-ball launcher.
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