Potato Launcher/Spud Gun - the 1st ever made in Bangladesh

I have designed and built a potato launcher. If you don't know what a potato launcher is, consult this article: http://en.wikipedia.org/wiki/Spudgun ... It is the first spud gun ever made in Bangladesh, so it's antique, so if you buy it, you can write your own name in history. You cannot make it yourself as some of the parts are unavailable in Bangladesh. You will not find them, no matter how hard you try. It's my best offer, consider it!