Not only does the prosthetic have a thruster in the palm that automatically lights up with LEDs when the hand is cocked back, it's also got faux lasers that are revealed and fired when the hand is folded down, armor-like gold details, and a cable pulley system that stays mostly hidden from view to help sell the effect.

The prosthetic was designed and engineered by Pat Starace who'd certainly love to see his creation put into mass production. But for the time being he's accepting individual requests on his site to help get them to kids who need them. And thanks to 3D printers, it's not terribly difficult for someone without Tony Stark's vast resources to simply make their own. [Pat Starace via Taxi]