Never bring a coke bottle to a gun fight. Unless that bottle is part of the gatling gun that can fire a hailstorm of arrows at your enemies. Case-in-point: Joerg Sprave’s homemade fully automatic Coke Bottle Gatling featured on his Slingshot Channel . It uses repressurized Coke bottle on a disc, a motorized screwdriver and a compressor. Please don’t try this at home — unless you have all the parts.