This weapon contains psychoactive circuitry; without activating it, the extremely complex power currents that allow to launch its projectiles properly cannot be controlled; and activating it is impossible without the Ninja 'Shadow Arts', which are such an anathema to our nature, that even trying to learn them is beyond reason. Tech-wise, this pistol accelerates ultra-thin (compact) discs in an EM field, and these discs are so sharp that they can cut almost anything.