A build it yourself Gauss gun!

No, really, you can actually make this sucker in your own basement. <a target="_blank" href="http://members.optushome.com.au/dbsite1/www.pskovinfo.ru/coilgun/index… website</a>, in Russian and English, shows you how. It takes you through the process, step-by-step, in somewhat broken English. And, it makes a pistol, not a rifle, which is <i>doubly</i> cool. So, this isn't a "firearm", per se, is it covered by the same rules? I'd imagine so. It would be, basically, a concealed weapon. It looks pretty effective, too, based on the photos(<a target="-blank" href="http://members.optushome.com.au/dbsite1/www.pskovinfo.ru/coilgun/P009.j…; and <a target="-blank" href="http://members.optushome.com.au/dbsite1/www.pskovinfo.ru/coilgun/P010.j…;). And, because it doesn't use an explosive charge, there's virtually no sound when it discharges. I see all kinds of applications for this little sucker.
Look out <a target="_blank" href="http://www.travellerrpg.com/">Traveller</a&gt;, here we come!