“Made by Japanese company Maruda, the RPG-7 PET Bottle Launcher is meant to be used only with 1.5L soda bottles that have been filled with water. To give you an idea of its potency, when shot at a 35º angle the toy can launch a bottle filled with 0.6L of water up to a distance of 115ft. That’s a vague idea, so here’s a more concrete one: The point is, don’t aim this at people or there will be blood.” w/ photos + video
