Heckler & Koch MP5
|Heckler & Koch MP5|
MP5A3 with a retractable stock and early handguard
|Place of origin||West Germany|
|Used by||See Users|
|Designer||Tilo Möller, Manfred Guhring, Georg Seidl, Helmut Baureuter|
|Manufacturer||Heckler & Koch|
|Action||Roller-delayed blowback, closed bolt|
|Rate of fire||
|Feed system||15- or 30- or 32- or 40- round detachable box magazine, 100-round Beta C-Mag drum magazine|
|Sights||Iron sights. Rear: rotary drum; front: hooded post|
The Heckler & Koch MP5 (from German: Maschinenpistole 5, "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. There are over 100 variants of the MP5, including a semi-automatic version.
- 1 History
- 2 Design details
- 3 Variants
- 4 Manufacturers
- 5 Users
- 6 References
- 7 External links
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. The first type was chambered for 7.62×51mm NATO, the second for the 7.62×39mm M43 round, the third for the intermediate 5.56×45mm NATO caliber, and the fourth type for the 9×19mm 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 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).
|This section does not cite any references or sources. (July 2009)|
The primary version of the MP5 family is the MP5A2, which is a lightweight, air-cooled, selective fire delayed blowback operated 9×19mm Parabellum weapon with a roller-delayed bolt. It fires from a closed bolt (bolt forward) position.
The first MP5 models used a double-column straight box magazine, but since 1977, slightly curved, steel magazines are used with a 15-round capacity (weighing 0.12 kg) or a 30-round capacity (0.17 kg empty).
The adjustable iron sights (closed type) consist of a rotating rear diopter drum and a front post installed in a hooded ring. The rear sight is adjustable for both windage and elevation with the use of a special tool, being adjusted at the factory for firing at 25m with standard 124 grains FMJ 9x19mm NATO ammunition; the drum provides four different apertures of varying width used to adjust the light entrance in the diopter system, according to the user's eye relief and tactical situation, and not for firing at 25, 50, 75 and 100m as some people wrongly imagine.
The MP5 has a hammer firing mechanism. The trigger group is housed inside an interchangeable polymer trigger module (with an integrated pistol grip) and equipped with a three-position fire mode selector that serves as the manual safety toggle. The “S” or Sicher position in white denotes weapon safe, “E” or Einzelfeuer in red represents single fire, and “F” or Feuerstoß (also marked in red) designates continuous fire. The SEF symbols appear on both sides of the plastic trigger group. The selector lever is actuated with the thumb of the shooting hand and is located only on the left side of the original SEF trigger group or on both sides of the ambidextrous trigger groups. The safety/selector is rotated into the various firing settings or safety position by depressing the tail end of the lever. Tactile clicks (stops) are present at each position to provide a positive stop and prevent inadvertent rotation. The "safe" setting disables the trigger by blocking the hammer release with a solid section of the safety axle located inside the trigger housing.
The non-reciprocating cocking handle is located above the handguard and protrudes from the cocking handle tube at approximately a 45° angle. This rigid control is attached to a tubular piece within the cocking lever housing called the cocking lever support, which in turn, makes contact with the forward extension of the bolt group. It is not however connected to the bolt carrier and therefore cannot be used as a forward assist to fully seat the bolt group. The cocking handle is held in a forward position by a spring detent located in the front end of the cocking lever support which engages in the cocking lever housing. The lever is locked back by pulling it fully to the rear and rotating it slightly clockwise where it can be hooked into an indent in the cocking lever tube.
The bolt rigidly engages the barrel extension—a cylindrical component welded to the receiver into which the barrel is pinned. The delay mechanism is of the same design as that used in the G3 rifle. The two-part bolt consists of a bolt head with rollers and a bolt carrier. The heavier bolt carrier lies up against the bolt head when the weapon is ready to fire and inclined planes on the front locking piece lie between the rollers and force them out into recesses in the barrel extension.
When fired, expanding propellant gases produced from the burning powder in the cartridge exert rearward pressure on the bolt head transferred through the base of the cartridge case as it is propelled out of the chamber. A portion of this force is transmitted through the rollers projecting from the bolt head, which are cammed inward against the inclined flanks of the locking recesses in the barrel extension and to the angled shoulders of the locking piece. The selected angles of the recesses and the incline on the locking piece produce a velocity ratio of about 4:1 between the bolt carrier and the bolt head. This results in a calculated delay, allowing the projectile to exit the barrel and gas pressure to drop to a safe level before the case is extracted from the chamber.
The delay results from the amount of time it takes for enough recoil energy to be transferred through to the bolt carrier in a sufficient quantity for it to be driven to the rear against the force of inertia of the bolt carrier and the forward pressure exerted against the bolt by the recoil spring. As the rollers are forced inward they displace the locking piece and propel the bolt carrier to the rear. The bolt carrier's rearward velocity is four times that of the bolt head since the cartridge remains in the chamber for a short period of time during the initial recoil impulse. After the bolt carrier has traveled rearward 4 mm, the locking piece is withdrawn fully from the bolt head and the rollers are compressed into the bolt head. Only once the locking rollers are fully cammed into the bolt head can the entire bolt group continue its rearward movement in the receiver, breaking the seal in the chamber and continuing the feeding cycle.
Since the 9×19mm Parabellum cartridge is relatively low powered, the bolt does not have an anti-bounce device like the G3, but instead the bolt carrier contains tungsten granules that prevent the bolt group from bouncing back after impacting the barrel extension. The weapon has a fluted chamber that enhances extraction reliability by bleeding gases backwards into the shallow flutes running along the length of the chamber to prevent the cartridge case from expanding and sticking to the chamber walls (since the bolt is opened under relatively high barrel pressure). A spring extractor is installed inside the bolt head and holds the case securely until it strikes the ejector arm and is thrown out of the ejection port to the right of the receiver. The lever-type ejector is located inside the trigger housing (activated by the movement of the recoiling bolt).
In the early 1970s HK introduced a conversion kit for the MP5 that enables it to use rimfire ammunition (.22 LR). This unit consists of a barrel insert, a bolt group and two 20-round magazines. This modification reduces the cyclic rate to 650 rounds/min. It was sold mostly to law enforcement agencies as a way to train recruits on handling the MP5. It used ammunition that was cheaper and had a lower recoil than 9mm Parabellum. This reduced training costs and built up skill and confidence in the operators before transitioning them to the full-bore model.
Threading is provided at the muzzle to work with certain muzzle devices made by Heckler & Koch, including: a slotted flash suppressor, blank firing attachment (marked with a red-painted band denoting use with blank ammunition only), an adapter for launching rifle grenades (for use with rifle-style grenades with an inside diameter of 22 mm using a special grenade launching cartridge) and a cup-type attachment used to launch tear gas grenades. An optional three-lugged barrel is also available for mounting a Quick Detachable suppressor.
The receiver housing has a proprietary claw-rail mounting system that permits the attachment of a standard Heckler & Koch quick-detachable scope mount (also used with the G3, HK33 and G3SG/1). It can be used to mount daytime optical sights (telescopic 4x24), night sights, reflex sights and laser pointers. The mount features two spring-actuated bolts, positioned along the base of the mount, which exert pressure on the receiver to hold the mount in the same position at all times assuring zero retention. All versions of the quick-detachable scope mount provide a sighting tunnel through the mount so that the shooter can continue to use the fixed iron sights with the scope mount attached to the top of the receiver.
A Picatinny rail adapter can be placed on top that locks into the claw rails. This allows the mounting of STANAG scopes and has a lower profile than the claw-rail system.
Laser Products has a replacement handguard incorporating a Sure-Fire Model 628 tactical 15,000-candlepower (65 lumen) quartz-halogen flashlight. It is powered by two 123A 3-volt lithium batteries for a battery life of about an hour of use. It is operated either by a squeeze-activated pressure tape switch on the right side for brief illumination or a rocker on/off switch on the left side for continuous illumination. It can be turned on just long enough for positive, close-range target discrimination and acquisition at night or used to illuminate or blind targets in low light conditions.
Aftermarket replacement handguards with Picatinny rails are available. Single-rail models have a Picatinny rail along the bottom and triple-rail models have rails along the bottom and sides. They allow the mounting of accessories like flashlights, laser pointers, target designators, vertical foregrips, and bipods.
The MP5A2 has a fixed buttstock (made of a synthetic polymer), whereas the compact MP5A3 has a retractable metal stock. The stockless MP5A1 has a buttcap with a sling mount for concealed carry; the MP5K series was a further development of this idea.
The MP5A4 (fixed stock) and MP5A5 (sliding stock) models are available with four-position trigger groups. The pistol grips are straight, lacking the contoured grip and thumb groove of the MP5A1, MP5A2, and MP5A3. The selector lever stops are marked with bullet pictograms rather than letters or numbers (each symbol represents the number of bullets that will be fired when the trigger is pulled and held rearward with a full magazine inserted in the weapon) and are fully ambidextrous (the selector lever is present on each side of the trigger housing). The additional setting of the fire selector, one place before the fully automatic setting, enables a two or three-shot burst firing mode.
A variant with the last trigger group designated the MP5-N (N—Navy) was developed in 1986 for the United States Navy. This model has a collapsible stock, a tritium-illuminated front sight post and a 225 mm (8.9 in) threaded barrel for use with a stainless steel sound suppressor made by Knight's Armament Company together with quieter subsonic ammunition. It had ambidextrous controls, a straight pistol grip, pictogram markings, and originally had a four-position selector (Safe, Semi-Auto, 3-Round Burst, Full Auto). This was replaced with a similar three-position ambidextrous selector after an improperly-reassembled trigger group spontaneously fired during an exercise. The "Navy"-style ambidextrous trigger group later became standard, replacing the classic "SEF".
|SEF||3-position||Safe (Sicher), Semi-Auto (Einzelfeuer), Full Auto (Feuerstoß)||Left-side|
|SF||2-position||Safe & Semi-Auto (Fire)||Ambidextrous|
|Navy||4-position||Safe, Semi-Auto, 2- or 3-round Burst, Full Auto||Ambidextrous|
|Navy||3-position||Safe, Semi-Auto, Full Auto||Ambidextrous|
|Trigger Group Settings||Marking system|
|Safe||Marked by a white numeral "0"||Marked by a white letter "S"||Marked by a white pictogram of a bullet symbol inside a closed rectangle with an "X" through it.|
|Semi-Automatic Fire||Marked by a red numeral "1"||Marked by a red letter "E"||Marked by a red pictogram of a bullet symbol inside a closed rectangle.|
|Burst Fire||Marked by a red numeral "2" or "3"||Marked by a red numeral "2" or "3"||Marked by a red pictogram of 2 or 3 bullets in a line inside a closed rectangle.|
|Fully Automatic Fire||Marked by a red numeral "30"||Marked by a red letter "F"||Marked by a red pictogram of 7 bullets in a line inside a rectangle with an open end facing the muzzle.|
Plastic training variants
H&K offers dedicated training variants of these weapons, designated MP5A4PT and MP5A5PT (PT—Plastic Training), modified to fire a plastic 9×19mm PT training cartridge produced by Dynamit Nobel of Germany. These weapons operate like the standard MP5 but have a floating chamber and both rollers have been omitted from the bolt to function properly when firing the lighter plastic projectiles. To help identify these weapons blue dots were painted on their cocking handles and additional lettering provided. The PT variant can be configured with various buttstocks and trigger groups and was developed for the West German Police and Border Guard.
Semi-auto only variants
The MP5SFA2 (SF – single-fire) was developed in 1986 in response to the American FBI solicitation for a "9 mm Single-fire Carbine". It is the same as the MP5A2 but is fitted with an ambidextrous semi-automatic only trigger group. The MP5SFA3 is similar except it has a retractable metal stock like the MP5A3. Versions delivered after December 1991 are assembled with select-fire bolt carriers allowing fully automatic operation when used with the appropriate trigger module.
The two-position trigger unit was used in the single-fire HK94 carbine that was produced specifically for the civilian market with a 420 mm (16.5 in) barrel.
In 1974 H&K initiated design work on a sound-suppressed variant of the MP5, designated the MP5SD (SD—Schalldämpfer German for "sound suppressor"), which features an integral but detachable aluminium sound suppressor and a lightweight bolt. The weapon's 146 mm (5.7 in) barrel has 30 2.5 mm (0.1 in) ports drilled forward of the chamber through which escaping gases are diverted to the surrounding sealed tubular casing that is screwed onto threading on the barrel’s external surface just prior to the ported segment. The suppressor itself is divided into two stages; the initial segment surrounding the ported barrel serves as an expansion chamber for the propellant gases, reducing gas pressure to slow down the acceleration of the projectile. The second, decompression stage occupies the remaining length of the suppressor tube and contains a stamped metal helix separator with several compartments which increase the gas volume and decrease its temperature, deflecting the gases as they exit the muzzle, so muffling the exit report. The bullet leaves the muzzle at subsonic velocity, so it does not generate a sonic shock wave in flight. As a result of reducing the barrel’s length and venting propellant gases into the suppressor, the bullet’s muzzle velocity was lowered anywhere from 16% to 26% (depending on the ammunition used) while maintaining the weapon’s automation and reliability. The weapon was designed to be used with standard supersonic ammunition with the suppressor on at all times.
The MP5SD is produced exclusively by H&K in several versions: the MP5SD1 and MP5SD4 (both have a receiver end cap instead of a buttstock), MP5SD2 and MP5SD5 (equipped with a fixed synthetic buttstock) and the MP5SD3 and MP5SD6 (fitted with a collapsible metal stock). The MP5SD1, MP5SD2 and MP5SD3 use a standard "SEF" trigger group (from the MP5A2 and MP5A3), while the MP5SD4, MP5SD5 and MP5SD6—a trigger module with a mechanically limited 3-round burst mode and ambidextrous selector controls (from the MP5A4 and MP5A5). A suppressed version was produced for the U.S. Navy – designated the MP5SD-N, which is a version of the MP5SD3 with a retractable metal stock, front sight post with tritium-illuminated dot and a stainless steel suppressor. This model has a modified cocking handle support to account for the slightly larger outside diameter of the suppressor. The design of the suppressor allows the weapon to be fired with water inside, should water enter the device during operation in or near water.
In 1976 a shortened version of the MP5A2 was introduced; the MP5K (K from the German word Kurz = "short") was designed for close quarters battle use by clandestine operations and special services. The MP5K does not have a shoulder stock (the receiver end was covered with a flat end cap, featuring a buffer on the inside and a sling loop on the outside), and the bolt and receiver were shortened at the rear. The resultant lighter bolt led to a higher rate of fire than the standard MP5. The barrel, cocking handle and its cover were shortened and a vertical foregrip was used to replace the standard handguard. The barrel ends at the base of the front sight, which prevents the use of any sort of muzzle device.
The MP5K is produced (by Heckler & Koch and under license in Iran and Turkey) in four different versions: the MP5K, MP5KA4, MP5KA1, MP5KA5, where the first two variants have adjustable, open-type iron sights (with a notched rotary drum), and the two remaining variants – fixed open sights; however, the front sight post was changed and a notch was cut into the receiver top cover. The MP5K retained the capability to use optical sights through the use of an adapter.
A civilian semiautomatic derivative of the MP5K known as the SP89 was produced that had a foregrip with a muzzle guard in place of the vertical grip.
In 1991 a further variant of the MP5K was developed, designated the MP5K-PDW (PDW—Personal Defense Weapon) that retained the compact dimensions of the MP5K but restored the fire handling characteristics of the full-size MP5A2. The MP5K-PDW uses a side-folding synthetic shoulder stock (made by the U.S. company Choate Machine and Tool), a “Navy” trigger group, a front sight post with a built-in tritium insert and a slightly lengthened threaded, three-lug barrel (analogous to the MP5-N). The stock can be removed and replaced with a receiver endplate; a rotary drum with apertures from the MP5A2 can also be used.
Larger caliber versions
In 1991, Heckler & Koch introduced the MP5/10 (chambered in 10mm Auto) and MP5/40 (chambered for the .40 S&W cartridge), which are based on the MP5A4 and MP5A5. These weapons were assembled in fixed and retractable stock configurations (without a separate designation) and are fed from translucent 30-round polymer box magazines. These weapons include a bolt hold-open device, which captures the bolt group in its rear position after expending the last cartridge from the magazine. The bolt is then released by pressing a lever positioned on the left side of the receiver. Both weapons use a barrel with 6 right-hand grooves and a 380 mm (1:15 in) twist rate, and like the MP5-N, both have a 3-lugged muzzle device and a tritium-illuminated front sight aiming dot.
Problems with the MP5/10 and MP5/40 led to the development of the Heckler and Koch UMP.
- HK54: The original model that was produced in the early-1960s. It had a charcoal-gray phosphated finish rather than the matte-black finish used on later models and had narrow slotted metal handguards. Its major differences were that it had a longer and heavier bolt carrier than the MP5 and a flip up "ladder"-style rear sight (like the early G3 rifle) rather than the MP5's aperture sight. Its original 15- or 30-round steel magazines were straight rather than curved, had a plastic follower, and were reinforced with ribs (thus their nickname of "waffle"-type magazines).
- MP5: A slightly modified version of the HK54 first created in 1966. It has a matte-black phosphated finish instead of the grayish finish. It originally had the narrow checkered metal "Slimline" handguards in the place of the HK54's narrow slotted metal ones. These were later replaced by the thicker "Tropical" handguards. The proprietary Heckler & Koch "claw mount" rails for mounting optical and electronic scopes were added around 1973. The improved 15- and 30-round magazines were adopted in 1977; they were curved, had unribbed sides, and had chromed-steel followers.
- MP5A1: No buttstock (endplate/receiver cap in place of buttstock), "SEF" trigger group.
- MP5A2: Fixed buttstock, "SEF" trigger group.
- MP5SFA2: Fixed buttstock, single-fire (SE) trigger group.
- MP5A3: Retractable buttstock,"SEF" trigger group.
- MP5SFA3: Semi-automatic carbine version of MP5A3. Retractable buttstock and single-fire (SF) trigger group.
- MP5A4: Fixed buttstock, 3-round burst trigger group.
- MP5A5: Retractable buttstock, 3-round burst trigger group.
- MP5-N: Model developed specifically for the U.S. Navy. Ambidextrous "Navy" trigger group, 3-lug/threaded barrel for attaching a sound suppressor; rubber-padded retractable stock.
- MP5F: Model developed specifically for the French military. Rubber-padded retractable stock, ambidextrous sling loops/bolts and internal modifications to handle high-pressure ammunition.
- MP5K: Short (Kurz) version created in 1976. It had a cut-down 4.5-inch barrel, shorter trigger group frame, and a vertical foregrip rather than a handguard. There are no MP5KA2 or MP5KA3 models because it doesn't come with a fixed or retractable stock.
- MP5K Prototype: A stockless, cut-down MP5A2 with regular iron sights and an open vertical foregrip. It was created in 1976.
- MP5KA1: MP5K with smooth upper surface and small low-profile iron sights; "SEF" trigger group.
- MP5KA4: MP5K with regular iron sights; four-position 3-round burst trigger group.
- MP5KA5: MP5K with smooth upper surface and small low-profile iron sights; four-position 3-round burst trigger group.
- MP5K-N: MP5K with "Navy" trigger group and 3-lug/threaded barrel for mounting suppressors or other muzzle attachments.
- MP5K-PDW: Personal Defense Weapon; MP5K-N variant introduced in 1991 for issue to special operations aircraft or vehicle crews. It adds a Choate side-folding stock, 5-inch 3-lug barrel for mounting a quick-detachable Qual-A-Tec suppressor, and an ambidextrous "Navy" 4-position trigger group with a 3-round burst mode. A shoulder cross-draw or thigh quick-draw holster is available.
- MP5SD: An MP5 model with an integrated suppressor (Schalldämpfer) created in 1974.
- MP5SD1: No buttstock (endplate/receiver cap in place of buttstock), "SEF" trigger group, integrated suppressor
- MP5SD2: Fixed buttstock, "SEF" trigger group, integrated suppressor.
- MP5SD3: Retractable buttstock, "SEF" trigger group, integrated suppressor.
- MP5SD4: No buttstock (endplate/receiver cap in place of buttstock), 3-round burst trigger group, integrated suppressor.
- MP5SD5: Fixed buttstock, 3-round burst trigger group, integrated suppressor.
- MP5SD6: Retractable buttstock, 3-round burst trigger group, integrated suppressor.
- MP5SD-N1: Retractable buttstock, "Navy" trigger group, KAC stainless steel suppressor.
- MP5SD-N2: Fixed buttstock, "Navy" trigger group, KAC stainless steel suppressor.
- MP5/10: Chambered in 10mm Auto, available in various stock/trigger group configurations. It was produced from 1992 to 2000.
- MP5/40: Chambered in .40 S&W, available in various stock/trigger group configurations. It was produced from 1992 to 2000.
- HK94: American import model of the MP5 with an exposed 16.54-inch [420mm] barrel and special SF (safe/semi-automatic) trigger group, designed for civilian use.
A barrel-mounted vertical foregrip and a ventilated barrel shroud were available for the stock HK94. (Arnold Schwarzenegger used a HK94A3 converted to fire full auto and modified with these accessories in the movie Raw Deal (1986); it is even featured in the poster art).
The HK94 was made from 1983 to 1989, in three different configurations:
- The HK94A2 had a fixed stock, an overall length of 34.59 inches [829 mm], and weighed 6.43 lbs. [2.92 kg.]. In 1991, the state of California imported 420 HK-94A2s, mostly for their state Department of Corrections; it was the last batch of HK-94s imported into the United States.
- The HK94A3 had a retractable stock, an overall length of 27.58 inches [700 mm] collapsed and 34.05 inches [865 mm] extended and weighed 7.18 lbs. [3.26 kg].
- The HK94/SG-1 (ScharfschutzenGewehr, "sharp-shooting rifle") was designed for short-range sniping in built-up areas like cities or prisons. It proved to be unsuitable for its designed purpose, due to its poor penetration and stopping power, and most went to target shooters and collectors. It had a fixed match stock with a rubber buttpad and an adjustable cheekpiece, folding bipod, flash hider, and a 6 x 42mm Leupold VIII Adjustable Objective scope. It had an overall length of 40.39 inches [1026mm] and a weight of 9.25 lbs. [4.2 kg]. Its Mean Standard Retail Price (MSRP) in 1986 was US$ 1,525; this was more than twice what a stock HK94A2 (US$ 650) or HK94A3 (US$ 720) cost. Only 50 were imported into the United States; authentic models have serial numbers running in the 43XX range.
As an aftermarket modification, a PSG-1 trigger pack with target pistol grip and match trigger could be added by a gunsmith by changing the ejector and hammer spring. The 6x Leupold scope was calibrated for .223 Remington rounds, so other scopes were often substituted.
- SP89: Sport Pistole M1989. Semi-automatic only version of the MP5K designed for civilian use. It had a modified vertical foregrip redesigned into a traditional handguard to make it compliant with the Semi-Auto Weapons Ban of 1989. It was made from 1989 to 1994.
Foreign Variant Copies
- T-94 ZSG (Zivile Sportgewehr, "Civilian Sport Rifle"): Turkish MP5 semi-automatic-only clone manufactured by MKE for the civilian European sport shooting market. The models available are the T-94P (HK94A2), T-94A (MP5A2), T-94K (MP5K), and T-94SD (MP5SD2). The T-94SD comes with a functioning integral silencer. The solid stocks are welded to the lower receiver to prevent the mounting of a retractable stock or receiver cap.
The AT-94 series, designed for the American market, is modified so that full-auto and 90-series trigger packs cannot be fitted.
- MP-10: A Philippine submachine gun manufactured by Special Weapons Inc. based on the MP5. The SP-10 is a civilian semi-auto copy.
- SMG PK-1: Pakistani copy of the MP5K but with a short retractable stock.
- China: Manufactured by Norinco as the NR-08 (a clone of the MP5A4) and NR-08A (a clone of the MP5A5).
- France: Manufactured under license by MAS.
- Greece: Manufactured under license by EAS (Ellinika Amyntika Systimata: "Hellenic Defence Systems").
- Iran: Manufactured under license by DIO as the Tondar (MP5A3) and Tondar Light (MP5K).
- Mexico: Manufactured under license by SEDENA.
- Pakistan: Manufactured under license by Pakistan Ordnance Factories. They make the MP5A2, MP5P3 (MP5A3), MP5P4 (MP5A4), MP5P5 (MP5A5), and SMG PK (MP5K). The SMG PK-1 is an MP5K clone with a short retractable stock.
- Saudi Arabia: Manufactured under license by Al Kharj Arsenal, Military Industries Corporation.
- Sudan: Manufactured by Military Industry Corporation as the Tihraga (MP5A3), a clone of the Iranian Tondar.
- Turkey: Manufactured by MKEK. Their trigger groups are marked: E (Safe), T (Semi-Auto) and S (Full Auto) instead of SEF.
- United Kingdom: Manufactured under license by Royal Small Arms Factory - Enfield.
- Albania: Garda e Republikes.
- Australia: Royal Australian Air Force Airfield Defence Guards, Special Operations Command, and all Police Tactical Groups.
- Austria: EKO Cobra.
- Bangladesh: Bangladesh Army, Special Forces, Rapid Action Battalion, and Bangladesh Navy Special Warfare Diving And Salvage.
- Belarus: The MP5A3 and MP5K are used by the "Almaz" anti-terrorist group.
- Brazil: In Brazil, the MP5 was used by second line units.
- Bulgaria: 160 imported in 2009.
- Canada: Canadian Forces Naval Boarding Party, Royal Canadian Mounted Police.
- China: Used by Chongqing SWAT (NR-08, Chinese copy of MP5)
- Costa Rica: UEA (Unidad Especial de Apoyo) Special Police Unit.
- Croatia: Lučko Anti-Terrorist Unit
- Czech Republic: URNA police counter-terrorist group and other units of the armed forces (MP5A5, MP5SD6, MP5K-PDW).
- Democratic Republic of Congo
- Ecuador: Special units GOE (Grupo de Operaciones Especiales) and GIR (Grupo de Intervención y Rescate) from the National Police.
- Egypt: Egyptian military counter terrorism unit 777.
- El Salvador
- Estonia: Estonian Police.
- Finland: Finnish Defence Forces under designation 9.00 konepistooli 2000.
- France: GIGN and certain specialized units within the French Army.
- Georgia: MP5K and MP5SD.
- Germany: Bundespolizei (Federal Police), Landespolizei (State Police), German Army, Feldjäger (Military Police), GSG 9 special operations unit and German Navy.
- Greece: Used by the EKAM counter-terrorist group.
- Hong Kong: Hong Kong Police Force (used by Airport Security Unit, Counter Terrorism Response Unit, Emergency Unit, Police Tactical Unit, Small Boat Unit, Special Duties Unit, CIB Surveillance Support Unit, VIP Protection Unit, Witness Protection Unit, and other regular units with various models of original HK).
- Iceland: Víkingasveitin, Icelandic National Police.
- India: Indian Army, MARCOS, National Security Guards, and Maharashtra State Force One. Also used by the Special Protection Group until 2008, when it was replaced with the FN P90 and FN F2000.
- Indonesia: Komando Pasukan Katak (Kopaska) tactical diver group of Indonesian Navy, Komando Pasukan Khusus (Kopassus) special forces group of Indonesian Army.
- Ireland: Irish Army Rangers.
- Italy: Used by the Carabinieri.
- Jamaica: Jamaica Constabulary Force.
- Japan: Special Boarding Unit, Special Assault Team, Special Security Team, Japanese Special Forces Group (MP5SD6), Japanese Imperial Guard.
- Kenya: Kenya Police.
- Liechtenstein: Special Police Unit, Security Corps.
- Lithuania: Lithuanian Armed Forces, Aras.
- Luxembourg: Unité Spéciale de la Police intervention unit of the Grand Ducal Police.
- Malaysia: Used by Royal Malaysian Customs, Grup Gerak Khas, PASKAL and PASKAU, as well as the Pasukan Gerakan Khas. UNGERIN
- Malta: Armed Forces of Malta
- Morocco: Royal Moroccan Army, Royal Moroccan Navy and Royal Moroccan Gendarmerie 
- Netherlands: Dutch Royal and Diplomatic security (DKDB), Arrestatieteam ( AT ) 
- New Zealand: New Zealand Special Air Service Commandos and New Zealand Police Special Tactics Group
- Norway: Norwegian Armed Forces, to be replaced by the MP7. Norwegian Police Service
- Pakistan: Used by Pakistan Army, Airport Security Force & personal security detail of VIP's.
- Philippines: Armed Forces of the Philippines, and Philippine National Police Special Action Force and other police and SWAT units.
- Poland: GROM special forces unit., FORMOZA special force unit, Police, Border Guard, CBA, ABW, Financial Police, Military Police Special Unit from Warsaw
- Portugal: Grupo de Operações Especiais (GOE).
- Romania: Land Forces Special Operations battalions.
- Russia: Various police forces and special forces.
- Saudi Arabia:
- Singapore: Singapore Armed Forces Commando Formation and Singapore Police Force (replacing the Sterling submachine guns in the paramilitary units of Gurkha Contingent, Police Coast Guard, Police Special Operations Command and Special Tactics and Rescue Team (STAR)).
- Slovakia: Various police forces.
- Slovenia: Slovenian Armed Forces and Slovenian Police
- South Africa: Special Task Force.
- South Korea: Republic of Korea Naval Special Warfare Brigade uses MP5A5 and MP5SD6.
- Spain: Grupo Especial de Operaciones (GEO).
- Sri Lanka
- Sweden: Swedish Police Service.
- Turkey: Used by various services.
- Ukraine: Used by the "Omega" special forces group.
- United Arab Emirates
- United Kingdom: Used by the United Kingdom Special Forces, Police Service of Northern Ireland, CO19, and most Authorised Firearms Officers. Semi-automatic version for routine police use.
- United States: Special Operations Forces, Secret Service, and FBI Hostage Rescue Team (10mm version). Also used by various police SWAT units at federal, state, and local levels.
- Vatican City: Used by the Swiss Guard.
- Vietnam: Used by Armed Police Force.
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|Wikimedia Commons has media related to:|
- Heckler & Koch MP5 at the Internet Movie Firearms Database
- Heckler & Koch—official pages: MP5A series, MP5SD, MP5-N, MP5K, MP5SF
- 2008 Heckler & Koch Military and LE brochure
- HKPRO: MP5, MP5K, MP5SD, MP5/10 & MP5/40
- REMTEK: MP5, MP5K, MP5K PDW, MP5SD, MP5/10