MP5K

The MP5K (German: Maschinenpistole 5 Kurz, English: Machine Pistol Model 5 Short) is a variant of the German MP5 developed in the 1980's, and both weapons are produced by Heckler & Koch. The MP5K fires the same 9x19 Parabellum round from the original MP5 from either 15 or 30-round magazines.

This variant was developed for counter-terrorist and law enforcement agencies that needed a large amount of firepower in a compact package. Compared to the original, the MP5K has a shorter range and penetration but is much more maneuverable to handle over the MP5 due to its smaller size. A variant of the MP5K, called the MP5K PDW, was developed in the 1990's as a replacement of military sidearms for soldiers and differs by having an attached folding stock on the rear of the weapon.

Battlefield 3: Close Quarters
In Battlefield 3: Close Quarters, the MP5K was spotted in the trailer for Donya Fortress in Conquest Domination, through the scope of Nokan's JNG-90 in the hands of MANDERSS01, a Russian Assault soldier. The weapon is seen with a 15-round magazine, a Red Dot Sight, a Suppressor, and a Laser Sight.