My DIY projects generally were pretty low-key and while I may have built a potato gun, I never ever attempted anything quite as nifty as a railgun. Not only is this railgun awesome, there is even a link to show you how you can build your own. It really isn't all that complicated once someone else figures out what you need. I don't recommend playing with this type of electricity, but if you do - please send us a video.
Properly built, railguns could be a world changing weapon. Electromagnetic forces accelerating projectiles at high speeds means powerful guns could one day again line the decks of ships. And the Navy has taken note. It is investing in railguns for the future, and is already building ships that would someday carry the sophisticated weapon.