Weapon name: Cyborg hand
Description: A hand made not to be efficient in fights, though it is, but fit the users body and be as unobstrusive as possible. Under the surface made out of rubber to look like skin, it's coated in steel. It's fingertps are removable to reveal a complex little machinery, the finger gun.
Weapon special abilities: Almost like the rokushiki technique, the user is able to transform every one of his fingers into a gun by removing the fingertip. Every one of those fingers can hold three bullets, though small. When used up, it has to be reloaded, something that takes a bit of time and should not be done on the battlefield. Aside from that little detail, the hand is, of course, hard, and ought to hurt when it hits someone.
History: A hand myde by the government mostly for surprise attacks. It wasn't very popular since cyborgs mostly prefer power over unobstursivness.