Re: Metrication
Actually aiming it would not be that easy - to stand a reasonable chance of delivering an effective shot the muzzle (if it can be said to have one) would need to be almost touching the target.
This is a point blank range weapon. It is useless at more than 5-10 m by design. At that range you might as well use a taser or something else which is guaranteed to incapacitate wherever it hits.