The Stiletto consisted of a stretchable armband, on top of which was mounted the full workings of the blaster. The barrel was short, being just over three inches, and the power pack receiver was situated at the rear of the barrel. Although the original design allowed for the power pack to hold enough blaster gas for up to five-hundred shots, this made the blaster too bulky to be comfortably worn and concealed on the wrist, so the ammo capacity was reduced to merely two-hundred shots.