History

 The Heckler & Koch MP5 (From Maschinenpistole 5 - German: "machine pistol model 5") is a 9mm submachine gun of German design, developed in the 1960s by a team of engineers from the German small arms manufacturer Heckler & Koch GmbH (H&K) of Oberndorf am Neckar.

The MP5 is currently one of the most widely used submachine guns in the world, having been adopted by numerous law enforcement agencies and special forces groups. In the 1990s, Heckler & Koch developed the Heckler & Koch UMP, the MP5's successor, though both remain in production.

Heckler & Koch, encouraged by the success of the G3 automatic rifle, developed a family of small arms consisting of four types of firearms (all based on a common G3 design layout and operating principle), where the first type was chambered in 7.62x51mm NATO, the second—using the 7.62x39mm M43 round, third—the intermediate 5.56x45mm NATO caliber and the fourth type—chambering the 9x19mm Parabellum pistol cartridge. The MP5 was created within the fourth group of firearms and was initially known as the HK54.

Work on the MP5 began in 1964 and scarcely two years later it was adopted by the German Federal Police, border guard and army special forces.

The MP5 is manufactured under license in several nations including Greece (formerly at EBO - Hellenic Arms Industry, currently at EAS - Hellenic Defense Systems), Iran (Defense Industries Organization), Mexico (SEDENA), Pakistan (Pakistan Ordnance Factories), Saudi Arabia, Sudan (Military Industry Corporation), Turkey (MKEK), and the United Kingdom (initially at Royal Ordnance, later diverted to Heckler & Koch Great Britain).

Singleplayer/Co-Op

The MP5K appears only in the mission "Executive Order" where it's used by Mason (with Extended Mags, a Red Dot Sight and with the Dusty camouflage). It is also used by Frank Woods but without any attachment.

The MP5K is featured in Nazi Zombies, and is available off the walls for 1000 points on Kino der Toten and "Five" with ammo costing an additional 500 points. It is quite powerful when paired with Double Tap Root Beer and works well until Round 10 or so before headshots become a priority with it, and around 15 before it becomes a major priority. Speed Cola is also very effective with this gun as it fixes the long reload time. The gun's fast firing rate allows for a medium-high accumulation of points. When Pack-a-Punched, its name is changed to "MP115 Kollider." It also has increased damage and features a larger magazine. Upgraded ammo can be bought from the wall for 4500 points.

Multiplayer

Damage 40-20 (MP)
 
Damage Multipliers Head: 1.4, Body: 1, Limbs: 1
 
Magazine Size 30 rounds; 45 rounds (Extended Mags)
 
Tier 5
 
Unlocked at 1
 
Cost (Nazi Zombies) 1000
 
Starting Ammunition 90 (MP)
 
Maximum Ammunition 240 (MP)
 
Reload Time 2.9 loaded, 3.2 unloaded
 
Rate of Fire 750 RPM 
 
Recoil Moderate
 
Penetration Low
 
Fire Mode Automatic
 
Used by SOG 
  

The MP5K is equipped with a unique foregrip. It has considerably less recoil and side to side rocking than its Modern Warfare 2 counterpart. It is unlocked at level 1, as it is part of the SMG default class. The MP5K lacks the rails, sling brackets, and curved magazine its Modern Warfare 2 counterpart sported. The rate of fire is also decreased.

The MP5K has one of the slowest reload times of any SMG. This can be remedied with Sleight of Hand, however with a magazine capacity of 30 (45 with Extended Mags), reloading isn't something users will have to do very often, and with the MP5K's high power, one can cleave through a group of enemies before needing to reload; this combo can turn the MP5K into a rather devastating room-clearing weapon. Due to its large magazine size, attaching a Suppressor can make the MP5K an accurate and deadly weapon that, as an added benefit, does not reveal the player's position to enemies when fired. Be warned, however, that the ACOG Scope does increase visual recoil, especially with submachine guns. Considering this weapon is designed for CQB, burst fire at a range to stay on target. Due to its high power, fairly low recoil, and being fully automatic, it is extremely useful as an early-level weapon. Also this weapon has a great hip fire use which combined with it's firepower can be a useful close range gun. It can be also used with a Rapid Fire attachment because with this attachment (especially with Steady Aim pro) MP5K will become one of the best weapons in CQB but remember that you will need Scavenger and it will heavilly increase the weapons recoil.

Challenges