The MP7 is a sub machine gun of German origin. It was developed by Heckler & Koch in the late 1990's as a personal defense weapon. The MP7 is a remarkable weapon for many reasons, but the use of the 4.6x30mm round that was specifically developed for this weapon is the most distinguishing feature. Due to its intended role and use of medium power high velocity rounds it is a direct competitor to the FN P90.

The MP7 is a very compact machine pistol with the magazine being inserted in the pistol grip. Internally the MP7 can be considered a scaled down version of the G36 assault rifle. The MP7 is gas operated and uses a rotating bolt. Most of the weapon is made out of polymer and a retractable stock and foldable front grip are fitted. Accessory rails allow for a variety of optics and attachments to be installed. The muzzle allows for a flash hider or silencer to be fitted.

The MP7 fires the proprietary 4.6x30mm round from a 20, 30 or 40 round magazine. It is a select fire weapon with a cyclic rate of fire of 950 rpm. Due to the limited recoil the MP7 is remarkably controllable. The maximum effective range is 150 to 200 meters. The 4.6mm round has a similar amount of energy as a 9x19mm round, but will pierce CRISAT armor at a range of 200 meters.

The MP7 is used by various law enforcement and counter terrorist units worldwide. The MP7, P90 and other designs were to equip non-combat personnel in the military, but this did not happen. Nevertheless the MP7 is in use with various military users, most of which are special forces units.