The MP5K is the ultimate close-quarters weapon. Created for use in very confined spaces, it is optimally suited both for active engagement of individual targets, and for personal defense. With its low weight and compact size, it offers a decisive advantage: The weapon can be carried concealed on the person without limiting the carrier‘s freedom of movement.This Gun Is The Smallest Member Of The MP5 Family. Based Upon An SP89 9mm Pistol, It's Very Compact. This is one of the few transferrable FULLY AUTOMATIC MP5 variants in circulation, meaning you as a civilian can own this firearm given you have no criminal record and get approved for your NFA Tax Stamp. We also have a silencershop kiosk so filing your tax stamp with us is a breeze!