Heckler & Koch HK33

Last updated
Heckler & Koch HK33
HK33A2 Flickr (yet another finn).jpg
The HK33 SG1 with a Trijicon ACOG optical sight.
Type Assault rifle
Place of origin West Germany
Service history
In service1968–present
Used bySee Users
Wars
Production history
Manufacturer Heckler & Koch,
MKEK (licensed)
Produced1968—2000 (H&K)
1999—present (MKEK) [4]
VariantsSee Variants
Specifications
MassHK33A2: 3.65 kg (8.05 lb) [5]
HK33A3: 4.0 kg (8.8 lb)
HK33KA3: 3.9 kg (8.6 lb)
HK53: 3.05 kg (6.7 lb)
LengthHK33A2: 920 mm (36.2 in)
HK33A3: 940 mm (37.0 in) stock extended / 735 mm (28.9 in) stock collapsed
HK33KA3: 865 mm (34.1 in) stock extended / 675 mm (26.6 in) stock collapsed
HK53: 755 mm (29.7 in) stock extended / 563 mm (22.2 in) stock collapsed
Barrel  lengthHK33A2: 390 mm (15.4 in)
HK33KA3: 332 mm (13.1 in)
HK53: 211 mm (8.3 in)

Cartridge .223 Remington
5.56×45mm NATO
Caliber 5.56mm
Action Roller-delayed blowback
Rate of fire HK33A2: 750 rounds/min
HK53: 700 rounds/min
Muzzle velocity HK33A2: 950 m/s (3,117 ft/s)
HK33KA3: 880 m/s (2,887.1 ft/s)
HK53: 750 m/s (2,460.6 ft/s)
Effective firing range200–400 m (219–437 yd) sight adjustments
600 metres (656 yd) with Fero Z24-G telescopic sight
Feed system25-, 30-, or 40-round detachable box magazine
SightsRotary rear aperture drum, hooded foresight
Peruvian police "Los Sinchis" operative with HK33 assault rifle and HK79 Grenade Launcher at SITDEF 2023. Peruvian Police "Los Sinchis" Operative with HK33.jpg
Peruvian police "Los Sinchis" operative with HK33 assault rifle and HK79 Grenade Launcher at SITDEF 2023.

The Heckler & Koch HK33 is a 5.56mm assault rifle developed in the 1960s by West German armament manufacturer Heckler & Koch GmbH (H&K), primarily for export.

Contents

Building on the success of their G3 design, the company developed a family of small arms (all using the G3 operating principle and basic design concept) consisting of four types of firearms: the first type, chambered in 7.62×51mm NATO; the second, using the Soviet 7.62×39mm M43 round; the third, chambered in .223 Remington and 5.56×45mm NATO; and the fourth type, chambered for the 9×19mm Parabellum pistol cartridge. Commercially the HK33 was a successful design but it did not sell as well as the G3.

The HK33 series of rifles were adopted by the Brazilian Air Force (Força Aérea Brasileira or FAB), the armed forces of Thailand and Malaysia where they were produced under a licence agreement. The rifle was also licence-built in Turkey by MKEK, and exported from France branded as MAS but actually made in Germany.

Design details

Operating mechanism

A schematic of the Heckler & Koch roller-delayed blowback mechanism G3 Bolt.PNG
A schematic of the Heckler & Koch roller-delayed blowback mechanism

The HK33 is a selective fire weapon with Heckler & Koch's roller-delayed blowback system of operation. It employs a two-piece bolt consisting of a bolt head with a pair of rollers and bolt carrier. Upon firing, the two cylindrical rollers in the bolt head are cammed inward by inclined surfaces of the barrel extension and impart a rearward motion on the locking piece, which also propels the bolt carrier rearward. This built-in mechanical disadvantage delays the movement of the bolt head relative to the bolt head carrier which is withdrawing at significant higher velocity of the bolt head. The rollers soon compress entirely into the bolt head, clearing the locking recesses of the barrel extension, and both parts now continue rearward together, opening the breech and actuating the extraction and feeding cycles. The chamber is opened under high pressure, thus the chamber received a series of flutes in order to increase extraction reliability and prevent sticking of the spent casing to the chamber walls.

The G3 roller-delayed blowback mechanism designed around 7.62×51mm NATO ammunition was downsized and revised for reliably using 5.56×45mm NATO ammunition. This required changing geometrical transmission ratio relationships between parts. Based on the geometric relationship arising from the angles of the roller contact surfaces of the locking piece and the barrel extension recesses, the recoil of the bolt head is delayed by a ratio of 3:1 for the 5.56×45mm NATO chambering. Thus during the same period of time, the bolt head carrier moves 3 times faster than the bolt head. This ratio is continued until the locking rollers have been withdrawn from the barrel extension recesses.

Like the G3 bolt the HK33 bolt features an anti-bounce mechanism that prevents the bolt from bouncing off the barrel's breech surface. The "bolt head locking lever" is a spring-loaded claw mounted on the bolt carrier that grabs the bolt head as the bolt carrier group goes into battery. The lever essentially ratchets into place with friction, providing enough resistance to being re-opened that the bolt carrier does not rebound. The spring-powered claw extractor is also contained inside the bolt while the lever ejector is located inside the trigger housing (actuated by the recoiling bolt). Further like the G3 the HK33 also contains a spring extractor and a buffer. The ejector lever was installed in the trigger housing and is actuated by the recoiling bolt.

The reliable functioning of roller-delayed blowback mechanisms is limited by specific ammunition and arm parameters like bullet weight, propellant charge, barrel length and amount of wear. For obtaining a proper and safe functioning parameters bandwidth Heckler & Koch offer a variety of locking pieces with different mass and shoulder angles. The angles are critical and determine the unlock timing and pressure curve progression as the locking pieces act in unison with the bolt head carrier. [6] [7]

Features

The HK33 is a modular weapon system. Its butt-stock, fore-stock and pistol-grip/fire-control assembly may be changed at will in a variety of configurations (listed below). Simple push-pins hold the components in place and removing them will allow the user to remove and replace parts rapidly. The rifle is disassembled into the following components for maintenance: the receiver/barrel, stock with return spring, bolt assembly and trigger pack in pistol grip.

Trigger

The HK33 has a conventional hammer-type firing mechanism. In the standard version, the rifle comes equipped with an ambidextrous trigger group with a selector lever that is simultaneously the weapon's safety (it has three positions: "S" or "0"—weapon is safe, "E"/"1"—semiautomatic fire, "F"/"25"—continuous fire). The "safe" setting mechanically disables the trigger. The trigger groups can be swapped out to meet the user's specific mission requirements. H&K offers several different trigger assemblies: a three-shot burst fire control group with selector lever/safety (selector settings: "0" weapon is safe, "1" single fire, "2" 2-round burst or "3" 3-round burst; the selector lever is ambidextrous); a "Navy" trigger unit (three settings: safe, semi and full auto fire) and a four-position trigger group (selector settings: safe, single fire, 3-round burst and automatic fire).

Feeding

The rifle is fed from 20- or 25-round steel magazines weighing 250 g or 40-round aluminum magazines (weighing 157 g). 30-round arch magazines were also introduced for use with the rifle. Turkish MKEK-made rifles are issued with 30-round polymer magazines.

Barrel

The barrel contains 6 right-hand grooves and terminates with a slotted flash suppressor that enables the use of rifle grenades and supports a standard G3-type bayonet that mounts above the barrel. The barrel end of the chamber is fluted, which assists in the initial extraction of a spent cartridge casing (since the breech is opened under very high internal cartridge case pressure). revised to the faster 178 mm (1:7 in) twist rate (used to stabilize new, heavier NATO-standard SS109/M855 ammunition).

Sights

Drehvisier rotating drum sight pictures Heckler & Koch rotating drum sight pictures.png
Drehvisier rotating drum sight pictures

The firearm is equipped with a relatively low iron sight line that consists of a Drehvisier a rotary rear drum and hooded front post. The rear sight is mechanically adjustable for both windage and elevation with the help of tools. This deliberately prevents non-armorers to (re)zero the iron sight line. The rotary drum features an open V-notch (numbered 1) for rapid target acquisition, close range, low light and impaired visibility use and three apertures (numbered 2, 3 and 4) used for: 200–400 metres (219–437 yd) in 100 metres (109 yd) increments for more precise aiming. The 1 V-notch and 2 or 200 metres (219 yd) aperture settings have an identical point of aim. The V-notch and apertures are calibrated for 5.56×45mm NATO ball ammunition.

The receiver housing has recesses that work with STANAG claw mounts/HK clamp adapters (standard with the HK33, G3, G3SG/1 and MP5) used to mount day (typically the Hensoldt 4×24 telescopic sight) or night aiming optics. The Hensoldt Fero 4×24 telescopic sight and mount assembly were developed for designated marksman use. The Fero elevation knob features Bullet Drop Compensation (BDC) settings for 100–600 metres (109–656 yd) in 100 metres (109 yd) increments calibrated for 5.56×45mm NATO ball ammunition. [8]

Accessories

Included with the rifle are a detachable bipod, bayonet (from the G3), sling, cleaning kit and a magazine loader. Additionally, the HK33 can be used to mount a 40 mm under-barrel HK79 grenade launcher or a blank-firing adaptor.

During its production life the rifle has received several minor improvements (these modified weapons are sometimes referred to collectively as the HK33E). The fixed stock was strengthened and the synthetic forearm replaced with a handguard that allows a lightweight bipod to be attached and stowed into two grooves at the base. The shoulder pad in rifles fitted with a telescopic stock was changed to a concave type used thus far in the MP5 series.

Variants

A Thai Army Military Policeman with the HK33. BKK24090611.jpg
A Thai Army Military Policeman with the HK33.
HK33A2 with Advanced Combat Optical Gunsight HK33A2 Flickr (yet another finn).png
HK33A2 with Advanced Combat Optical Gunsight
HK53 short barrel variant HK 53 schattenriss noBG.png
HK53 short barrel variant
HK33A2
Variant with a rigid synthetic stock.
HK33SG/1
An accurized model; equipped with a telescopic sight and improved trigger analogous to the one used in the G3SG/1.
HK33A3
Standard rifle but with telescoping metal stock.
HK33KA3
Carbine version with barrel reduced in length to the base of the front sight post; also equipped with a collapsible metal stock. Due to the short barrel, the HK33KA3 cannot be used to launch rifle grenades or mount a bayonet.
HK53
Compact version of the HK33K. Has a short 211 mm (8.3 in) barrel, a forearm derived from the MP5 submachine gun and a telescopic shoulder stock or receiver endplate cover (later models also received a four-prong flash hider).
HK13
Light machine gun. It is fed from either box or drum magazines (the latter has a 100-round capacity), has a quick-change heavy barrel for sustained fire, shrouded with a sheet metal heat guard (replacing the synthetic forearm) and a 2-point bipod adapter.
HK23
Machine gun. It is fed from a disintegrating belt. It is otherwise the same as the HK13.
Harrington & Richardson T223
Licensed copy of the HK33 made during the mid-1960s [9] to compete with the M16 during the smallbore rifle trials. [10] It was mechanically identical to the HK33, except for slight changes to meet the rifle trials requirements. The selector was marked in English (Safe, S.A. (semi-automatic), and F.A. (full automatic)) rather than German (S for Sicher - "secure", or safe; E for Einzelfeuer - "single fire", or semi-automatic; and F for Feuerstoss - "firing burst", or automatic fire). The adjustable bipod was redesigned so that it had a tab that slotted into a mount behind the forend, rather than clamping to the siderails. It used the early straight-walled aluminum 20-round magazine with a bolt hold-open device. There was a lever inside the front of the trigger guard that would release and close the open bolt. The basic T223 kit came with six 20-round magazines, a bipod with carrying case, a bayonet and scabbard, and a webbing-cloth sling. It could also use the later Hecker & Koch curved 25- or 40-round magazines, which gave it more capacity than the M16's 20- and 30-round magazines. [11] It wasn't a popular seller, as any qualified client outside the US military who wanted an HK33 could just buy one (and most were still buying G3s and FALs). It was no longer featured in the company catalog after 1967 and all stocks were sold off when H&R went bankrupt in 1986.
The Navy SEALs trialed it during the Vietnam War with the extended 40-round magazine as standard. Their rifle kit was similar to the commercial box except it came packed with four 40-round magazines instead. Since the magazines wouldn't fit in standard US web gear pouches, SEALs carried them in Chinese-made webgear for AK47 magazines. Although it was popular, the bias against non-American designs, its lack of compatibility with M16 magazines and accessories, and its higher cost than the M16 kept it from being adopted as a standard weapon.
Type 11
A derivative of the HK33 manufactured in Thailand by the Ministry of National Defence for use by the Thai armed forces. A bullpup variant also exists with M16 sights and foregrip for close combat in jungle environments. [12]
MA-11
A Myanmar-made version of the HK33 assault rifle which was fielded from the late 90s to early 2000s. It was made by KaPaSa in cooperation with Myanmar Fritz Werner Industries alongside engineers from the Electro-Mechanical and Engineering Corps of the Army of Myanmar (EMEC). [13] [14] A bayonet can be mounted underneath the barrel. [14] It can use STANAG-adapted magazines. [15]
MA-12
A Myanmar-made light machine gun of the HK33 made under license by KaPaSa in cooperation with Myanmar Fritz Werner Industries alongside engineers from the Electro-Mechanical and Engineering Corps of the Army of Myanmar (EMEC), which had a heavy barrel and bipod with a carry handle. [13] [14] It can use STANAG-adapted magazines. [15]

Sporting variants

The Heckler & Koch HK43 is a semi-automatic rifle based upon the Heckler & Koch HK33 rifle and is the predecessor of the Heckler & Koch HK93. HK43.jpg
The Heckler & Koch HK43 is a semi-automatic rifle based upon the Heckler & Koch HK33 rifle and is the predecessor of the Heckler & Koch HK93.
HK43
Heckler & Koch also manufactured a semi-automatic only variant of the HK33A2 for the civilian market called the Heckler & Koch HK43. The HK40-series was designed for sale to conscripts so they could be familiar with their service rifle before entering military service, then a common practice in Germany and Switzerland. They had a bayonet mount and furniture just like the military model, but came with a semi-auto trigger pack instead of a full auto trigger pack. This allowed a civilian rifle to be easily made into an assault rifle just by dropping in a full auto trigger pack. It would be succeeded by the HK93A2 and its retractable stock version the HK93A3. The HK93 series had a redesigned semi-automatic trigger pack and metal shelf installed in the trigger group well that made it impossible for it to fit a full-auto trigger pack. It also had the bayonet mount removed and had different furniture.
C-93
Civilian semi-automatic sporting version produced by Century International Arms, Inc. It comes with an 18.9 or 16.25-inch (413 mm) barrel with a 1:9 twist ratio. A carrying handle and 40-round magazine are standard. Advertised weight is 8.2 lbs. The C-93 is built from Thai Type-11 parts kits using an American made barrel and other miscellaneous American parts.

Combat history

A copy of the Heckler & Koch HK33 was built under licence by Harrington & Richardson as T223 during the Vietnam War. [16] Although heavier than the M16, it was used in small numbers by SEAL teams due to its available 40-round magazine. [17] In Myanmar, the Karen National Liberation Army fielded government-made HK33s. [18] Thai government units fielded HK33s during the South Thailand insurgency. [19] Some of these rifles were seized by groups such as the Patani United Liberation Organisation [20] or the Gerakan Mujahidin Islam Patani. [21] The Kurdistan Workers' Party often claimed it seized HK33s from the Turkish forces. [22]

Users

An Ecuadoran Marine armed with an HK33E rifle. Ecuadoran marine DN-ST-92-03538.jpg
An Ecuadoran Marine armed with an HK33E rifle.
A Chilean Marine (right) aiming the HK33A2 during training alongside U.S. Marines. Chilean Marine HK33.jpg
A Chilean Marine (right) aiming the HK33A2 during training alongside U.S. Marines.

See also

Notes

  1. "DESVELANDO A GUERRA ABERTA – "O Imaginário dos militares na Guerrilha do Araguaia", cap. 3". 11 April 2005.
  2. "Northeast insurgents add German weapons to their arsenal". 23 December 2013.
  3. "Recent images of Rio's drug war -". The Firearm Blog. 2017-10-04. Retrieved 2022-10-27.
  4. "Heckler&Koch HK 33 и HK 53 assault rifle - Modern Firearms". Archived from the original on 2018-10-25. Retrieved 2019-01-11.
  5. Shea, Dan. "HK33 Brochure". Small Arms Review. Retrieved 15 July 2019.
  6. "How Does It Work: Roller Delayed Blowback" via www.youtube.com.
  7. Thornton, Nathan (October 12, 2019). "How Roller-Delayed Firearms Work and Why it Matters". International Sportsman.
  8. "Fero Z24 4×24 telescopic sight for G3 rifle instruction manual" (PDF). Archived (PDF) from the original on 23 August 2016. Retrieved 25 March 2018.
  9. Heckler & Koch entered into an agreement with Harrington & Richardson in 1963 to be their American partner. Heckler & Koch would submit their designs through Harrington & Richardson and their contacts rather than set up an American branch. The HK13/HK23/HK33/HK53 series was offered to Harrington & Richardson in 1964.
  10. Small Arms Weapons Systems (SAWS) trial of 1965.
  11. The improved HK curved magazines were available from 1966. The HK33 and its magazines lack the T223's hold-open system.
  12. "Image of Hock Gun". I257.photobucket.com. Archived from the original on 2013-10-19. Retrieved 2013-10-18.
  13. 1 2 "Ka-Pa-Sa MA-11/MA-12 (HK-33) assault weapon system". Archived from the original on 2018-05-03. Retrieved 2018-07-25.
  14. 1 2 3 4 "Burmese Small Arms Development". Archived from the original on 2018-07-15. Retrieved 2018-07-25.
  15. 1 2 The World's Assault Rifles by Johnson and Nelson, Page 217.
  16. Thompson, Leroy (2019). The G3 Battle Rifle. Osprey Publishing. p. 44.
  17. Dockery, Kevin (December 2004). Weapons of the Navy SEALs. New York City: Berkley Publishing Group. p. 382. ISBN   0-425-19834-0.
  18. Koorey 2008, p. 165.
  19. Koorey, Stephanie L.K. (November 2008). Orphans and Icons: Small Arms Control and Armed Groups in Southeast Asia (PhD). Australian National University. p. 176.
  20. Gunaratna, Rohan; Acharya, Arabinda (2013). The terrorist threat from Thailand : jihad or quest for justice?. Washington, D.C.: Potomac Books. p. 1990. ISBN   9781597975827.
  21. Lumbaca, Jeremiah C. (June 2005). Islamic Insurgency And Transnational Terrorism In Thailand: Analysis And Recommended Solution Strategy. p. 126. Archived from the original on 2019-03-06. Retrieved 2019-03-06.
  22. "HPG / PKK : the balance of war for the year 2012". 3 October 2013. Archived from the original on 6 March 2019. Retrieved 6 March 2019.
  23. 1 2 "wiw_sa_brazil - worldinventory". 2016-06-02. Archived from the original on 2016-06-02. Retrieved 2022-11-21.
  24. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Jones, Richard D. Jane's Infantry Weapons 2009/2010. Jane's Information Group; 35 edition (January 27, 2009). ISBN   978-0-7106-2869-5.
  25. Chile; Marines confirm SCAR 5.56mm rifles order Archived 2013-08-21 at the Wayback Machine - Dmilt.com, 2 August 2013
  26. "Google Sites". sites.google.com. Archived from the original on 24 November 2016. Retrieved 21 March 2018.
  27. Montes, Julio A. (May 2000). "Infantry Weapons of the Salvadoran Forces". Small Arms Review. Vol. 3, no. 8. Archived from the original on 2019-01-19. Retrieved 2019-01-19.
  28. "Diensteinheit IX (9. Volkspolizei-Kompanie) - спецназ полиции ГДР. - все про оружие человечества". Archived from the original on 2019-05-21. Retrieved 2019-04-05.
  29. "Modern Firearms - HK HK33 and HK53". World.guns.ru. Archived from the original on 2010-09-14. Retrieved 2013-10-18.
  30. "Kopassus & Kopaska - Specijalne Postrojbe Republike Indonezije" (in Croatian). Hrvatski Vojnik Magazine. Archived from the original on 2010-08-22. Retrieved 2010-06-12.
  31. "Garda College Yearbook listing weapons training on page 66" (PDF). Archived from the original (PDF) on 2014-01-24.
  32. Lally, Conor (2004-09-06). "Call for increase in Army's Rangers". The Irish Times . Retrieved 2021-03-26.
  33. "Equipement :: Unité Spéciale de la Police ::". USP.LU. Archived from the original on 2011-07-22. Retrieved 2013-10-18.
  34. Gander, Terry J.; Hogg, Ian V. Jane's Infantry Weapons 1995/1996. Jane's Information Group; 21 edition (May 1995). ISBN   978-0-7106-1241-0.
  35. Alpers, Philip (2010). Karp, Aaron (ed.). The Politics of Destroying Surplus Small Arms: Inconspicuous Disarmament. Abingdon-on-Thames: Routledge Books. pp. 168–169. ISBN   978-0-415-49461-8.
  36. Montes, Julio A. (August 2011). "Peruvian Small Arms: Gunning for the Shining Path" (PDF). Small Arms Defense Journal: 25–29. Archived from the original (PDF) on 2016-03-04. Retrieved 2018-07-05.
  37. "wiw_sa_peru - worldinventory". 2016-05-29. Archived from the original on 2016-05-29. Retrieved 2022-10-26.
  38. "Rice Not Guns - German Arms in the Philippines". Archived from the original on 7 September 2010. Retrieved 23 December 2014.
  39. "Menirea Intervenției Rapide" (in Romanian). Presa Militara Romana. 2004. Archived from the original on April 8, 2009.
  40. Archived December 13, 2008, at the Wayback Machine
  41. "Man anhållen misstänkt för skjutning mot polisbostad i Västerås". Archived from the original on 2018-09-23. Retrieved 2018-09-22.
  42. "Google Sites". sites.google.com. Archived from the original on 24 November 2016. Retrieved 21 March 2018.
  43. Robert Muggah and Emile LeBrun, ed. (October 2010). Timor-Leste Armed Violence Assessment Final Report (PDF). Special Report No. 12. Small Arms Survey. p. 17. ISBN   978-2-940415-43-4. Archived from the original (PDF) on 2017-05-05. Retrieved 2018-08-30.
  44. "MKEK - Makina ve Kimya Endüstrisi Kurumu". Archived from the original on 7 May 2016. Retrieved 23 December 2014.
  45. Geraghty, Tony (1988). Bullet Catchers: Bodyguards and the World of Close Protections. ISBN   0246131705.
  46. "L101A1: The British HK53s". British Rifle Resource.
  47. McNab, Andy (1995). Immediate Action. ISBN   0552153583.
  48. "British report on receiver damage to HK53 and G3 rifles". www.smallarmsreview.com.
  49. "Raoul Moat: police armed to the teeth for any showdown". www.telegraph.co.uk.
  50. "Guns of the United States Border Patrol". Human Events. Archived from the original on 2010-05-07. Retrieved 2013-10-18.

Related Research Articles

<span class="mw-page-title-main">Heckler & Koch MP5</span> 9×19mm Parabellum submachine gun

The Heckler & Koch MP5 is a submachine gun developed in the 1960s by German firearms manufacturer Heckler & Koch. It uses a similar modular design to the Heckler & Koch G3, and has over 100 variants and clones, including selective fire, semi-automatic, suppressed, compact, pistol-classed, and even marksman variants. The MP5 is one of the most widely used submachine guns in the world, having been adopted by over forty nations and numerous militaries, police forces, intelligence agencies, security organizations, paramilitaries, and non-state actors.

<span class="mw-page-title-main">IMI Galil</span> Family of Israeli automatic rifles

The IMI Galil is a family of Israeli-made automatic rifles chambered for the 5.56×45mm NATO and 7.62×51mm NATO cartridges. Originally designed by Yisrael Galili and Yakov Lior in the late 1960s, the Galil was first produced by the state-owned Israel Military Industries and is now exported by the privatized Israel Weapon Industries.

<span class="mw-page-title-main">FAMAS</span> French bullpup assault rifle

The FAMAS is a bullpup assault rifle designed and manufactured in France by MAS in 1978. It is known by French troops as Le Clairon due to its distinctive shape.

<span class="mw-page-title-main">Heckler & Koch G3</span> German battle rifle

The Heckler & Koch G3 is a select-fire battle rifle chambered in 7.62×51mm NATO developed in the 1950s by the German firearms manufacturer Heckler & Koch, in collaboration with the Spanish state-owned firearms manufacturer CETME. The G3 was the service rifle of the German Bundeswehr until it was replaced by the Heckler & Koch G36 in the 1990s, and was adopted into service with numerous other countries.

The Heckler & Koch PSG1 is a semi-automatic sniper rifle designed and produced by the German company Heckler & Koch.

<span class="mw-page-title-main">Ultimax 100</span> Light machine gun, Squad automatic weapon

The Ultimax 100 is a Singapore-made 5.56mm light machine gun, developed by the Chartered Industries of Singapore by a team of engineers under the guidance of American firearms designer L. James Sullivan. The weapon is extremely accurate due to its constant-recoil operating system and is one of the lightest machine guns in the world.

<span class="mw-page-title-main">Closed bolt</span>

A semi or full-automatic firearm which is said to fire from a closed bolt or closed breech is one where, when ready to fire, a round is in the chamber and the bolt and working parts are forward in battery. When the trigger is pulled, the firing pin or striker fires the round; the action is cycled by the energy of the shot, sending the bolt to the rear, which extracts and ejects the empty cartridge case; and the bolt goes forward, feeding a fresh round from the magazine into the chamber, ready for the next shot.

The Ak 5 is a license-built Swedish version of the Belgian FN FNC assault rifle, with certain modifications, mostly to adapt the weapon to the partially subarctic Swedish climate. The Ak 5 is the current service rifle of the Swedish Armed Forces, adopted in 1986, partially replacing the Ak 4, a license-built version of the Heckler & Koch G3.

The Sturmgewehr 57 is a selective fire battle rifle designed by Schweizerische Industrie Gesellschaft of Switzerland. The Stgw. 57 assault rifle uses a roller-delayed blowback system similar to the blowback system of the Heckler & Koch G3 and CETME rifles. As an assault rifle, the model AM 55 entered service in the Swiss Army in three designations F. ass. 57 7.5mm and 7.5mm Stgw. 57. Technologically, the Stgw. 57 was the mechanical and design basis for the export-variations of the SG 510 family of small arms. After thirty-three years, from 1957 to 1990, the Swiss Army replaced the Stgw. 57 with the SIG SG 550, a lighter-weight assault rifle.

<span class="mw-page-title-main">Heckler & Koch G41</span> Assault rifle

The Heckler & KochG41 is a German 5.56×45mm NATO assault rifle introduced in 1981 and produced in limited quantities by Heckler & Koch. It was designed to replace the 7.62×51mm NATO chambered Heckler & Koch G3 and the G3 based .223 Remington/5.56×45mm and later 5.56×45mm NATO chambered Heckler & Koch HK33 service rifles providing a more modern weapon compatible with then recently introduced NATO standards. It can use both the then new STANAG 4172 compliant 5.56×45mm NATO SS109, SS110, and SS111 ammunition and older .223 Remington/5.56×45mm M193 ammunition and was the last Heckler & Koch service rifle designed around the roller-delayed blowback mechanism.

<span class="mw-page-title-main">Heckler & Koch HK41</span> Semi-automatic rifle

The Heckler & Koch HK41 is a semi-automatic version of the Heckler & Koch G3 battle rifle. It was produced by Heckler & Koch for civilian sales and Bundeswehr reservist market for a rifle that could be privately owned in Germany but which would duplicate the handling of the G3 for reservists to practice with. The field manual for shooting training authorised the use of HK41 by reservists in place of a G3 during special reservist range firings. But not for use in any other military activity. Usually it was called “Reservistengewehr”. The HK40-series was designed for sale to conscripts so they could be familiar with their service rifle before entering military service, a common practice in Germany and Switzerland. According to H&K's numbering nomenclature, the "4" indicates that the weapon is a paramilitary rifle, and the "1" indicates that the caliber is 7.62 mm.

<span class="mw-page-title-main">Heckler & Koch HK21</span> General-purpose machine gun

The HK21 is a German 7.62 mm general-purpose machine gun, developed in 1961 by small arms manufacturer Heckler & Koch and based on the G3 battle rifle. The weapon is in use with the armed forces of several Asian, African and Latin American countries. It was also license-manufactured by Fábrica de Braço de Prata in Portugal as the m/968 and in Mexico by SEDENA as the MG21. In the German military (Bundeswehr) and the federal police (Bundespolizei) it is designated "G8".

The SG 550 is an assault rifle manufactured by SIG Sauer AG in Switzerland. "SG" is an abbreviation for Sturmgewehr. The rifle is based on the earlier 5.56×45mm NATO SIG SG 540.

The Ameli is a 5.56mm light machine gun designed for the Spanish Army by the nationally owned and operated Centro de Estudios Técnicos de Materiales Especiales (CETME) small arms research institute.

<span class="mw-page-title-main">CETME Model L</span> Assault rifle

The Model L is a Spanish 5.56×45mm NATO assault rifle developed in the late 1970s at the state-owned small arms research and development establishment CETME located in Madrid. The rifle retains many of the proven design elements the institute had used previously in its CETME Model 58 battle rifles.

<span class="mw-page-title-main">Heckler & Koch HK43</span> Semi-automatic rifle

The Heckler & Koch HK43 is a civilian semi-automatic rifle based upon the Heckler & Koch HK33 rifle and is the predecessor of the Heckler & Koch HK93 semi-automatic rifle.

The FN FNC is a 5.56×45mm NATO assault rifle developed by the Belgian arms manufacturer FN Herstal and introduced in the late 1970s.

<span class="mw-page-title-main">CETME rifle</span> Battle rifle

The CETME Model 58 is a stamped-steel, select-fire battle rifle produced by the Spanish armaments manufacturer Centro de Estudios Técnicos de Materiales Especiales (CETME). The Model 58 used a 20-round box magazine and was chambered for the 7.62×51mm NATO round. The CETME 58 would become the foundation of the widely deployed German Heckler & Koch G3 battle rifle. Semi-automatic variants were also produced for the civilian market.

<span class="mw-page-title-main">Assault rifle</span> Self-loading rifle that fires an intermediate-power rifle cartridge

An assault rifle is a select fire rifle that uses an intermediate-rifle cartridge and a detachable magazine. Assault rifles were first put into mass production and accepted into widespread service during World War II. The first assault rifle to see major usage was the German StG 44, a development of the earlier Mkb 42. While immediately after World War II, NATO countries were equipped with battle rifles, the development of the M16 rifle during the Vietnam War prompted the adoption of assault rifles by the rest of NATO. By the end of the 20th century, assault rifles had become the standard weapon in most of the world's armies, replacing full-powered rifles and submachine guns in most roles. The two most successful modern assault rifles are the AK-47 and the M16 designs and their derivatives.

Ludwig Vorgrimler is the man most commonly associated with the design of the Spanish roller-delayed CETME rifle, and its prolific offspring from the German gunmaker Heckler & Koch such as the G3, HK21, P9 and MP5.

References