Heckler & Koch MP7 from Best CQC(Close Quarters Combat) Weapons

Heckler & Koch MP7 seems to be one of the best PDW weapons nowadays. It was designed to meet NATO requirements after 1989. It has short-stroke piston gas system and such small ammunition (4.6×30mm) to get low recoil (however, such ammo is an exclusive one and produced exactly for this gun).