Below are replica MP7 Airsoft Sub-Machine Guns. The original MP7 is a German SMG manufactured by Heckler & Koch. What is most interesting about this particular SMG is its ammunition... With the proliferation of high-quality body armor, most early pistol ammunition had been rendered useless when put to the test. In response to this trend, HK designed the MP7 to penetrate body armor, yet be small enough to be used in place of either a pistol or a submachine gun. With that, the MP7 essentially operates like a scaled-down assault rifle, firing a specially designed, armor-piercing round with a muzzle velocity nearly as high as that of many modern rifles.