If you're Adam Savage, what do you do in your spare time? Why, make sci-fi gun replicas, of course. Here's a project he's been tinkering with for an impressive (or worrying, take your pick) thirteen years.
My only problem with this particular build? I can't think of The Fifth Element without thinking of Chris Tucker's annoying high-pitched character. Although I suppose if I had a really big gun… [Youtube via MAKE]