The World's Largest Switchblade Knife

If you're trying to impress a mugger Dundee-style, it would be hard to top the Marfione Custom HALO V 3X — a giant switchblade. With its 13.75-inch tanto (yes, the Samurai sword) blade, this elephantine knife-sword unleashes from its titanium draw bar at the push of a button.

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This is probably the closest thing to the lightsaber we've ever seen. Well, if a lightsaber had "canyon-sized blood-grooves" down the side and was "designed for penetration."

Ethan Wolff-Mann is the Gear editor of Supercompressor. He is not sure of a giant switchblade's legality, but his gut says it may be more permissible due to the irrelevance of the concealment argument. Follow him on Twitter @ewolffmann.