Our water balloon slingshot comes in 3 sizes. Our Basic Model can launch a balloon over 300 ft. It has a small air tank for folks who don't own an air compressor. This launcher is lighter than our standard launcher with a shorter barrel that fits into any trunk. Our standard water balloon slingshot launches water balloons 400 ft. and has a longer barrel, more pressure and larger valve. Our Magnum water balloon slingshot is really big. It is for those who want to launch water balloons over 500 ft. These slingshots have huge air tanks, 6 ft. barrels, more pressure and huge valves. Visit our online store for the official Balloon Bazooka ™.