Rheinmetall Rh-120

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File:Rheinmetall 120 mm gun-Leoaprd 2E.jpg
Muzzle of a Rheinmetall 120 mm L/55 tank gun on a Spanish Leopard 2E

The Rheinmetall Rh-120 is a 120 mm smoothbore tank gun designed and produced in former West Germany by the Rheinmetall Waffe Munition GmbH company. It was developed in response to Soviet advances in armour technology and development of new armoured threats. Production began in 1974, with the first version of the gun, known as the L/44 as it was 44 calibres long, used on the German Leopard 2 tank and soon produced under license for the American M1A1 Abrams and other tanks. The Template:Convert L/44 gun has a length of Template:Convert, and the gun system weighs approximately Template:Convert.

By 1990, the L/44 was not considered powerful enough to defeat future Soviet armour, which stimulated an effort by Rheinmetall to develop a better main armament. This first involved a Template:Convert tank gun named Neue Panzerkanone 140 ('new tank gun 140'), but later turned into a compromise which led to the development of an advanced 120 mm gun, the L/55, based on the same internal geometry as the L/44 and installed in the same breech and mount. The L/55 is Template:Convert longer, generating increased muzzle velocity for rounds fired through it. As the L/55 retains the same barrel geometry, it can fire the same ammunition as the L/44.

The L/55 gun was retrofitted into German and Dutch Leopard 2s, and chosen as the main gun of the Spanish Leopard 2E and the Greek Leopard 2HEL. It was tested on the British Challenger 2 as a potential replacement for its rifled L30 120 mm cannon.

A variety of ammunition has been developed for use by tanks with guns based on Rheinmetall's original L/44 design. This includes a series of kinetic energy penetrators, such as the American M829 series, and high-explosive anti-tank warheads. Recent ammunition includes a range of anti-personnel rounds and demolition munitions. The LAHAT, developed in Israel, is a gun-launched anti-tank guided missile which has received interest from Germany and other Leopard 2 users. It is designed to defeat both land armour and combat helicopters. The Israelis also introduced a new anti-personnel munition which limits collateral damage by controlling the fragmentation of the projectile.

Background

File:Leo2Br80.jpg
Prototype of the Leopard 2

The development of the 120 mm L/44 gun started in 1965, as the Bundeswehr felt a more powerful gun was needed for its new tanks.[1][2] The first instance of a larger Soviet tank gun was witnessed on the chassis of a modified T-55 in 1961.[3] In 1965, the Soviet Union's T-62 made its first public appearance, armed with a Template:Convert smoothbore tank gun.[4] The Soviet decision to increase the power of its tank's main armament had come when, in the early 1960s, an Iranian tank commander defected over the Soviet border in a brand-new M60 Patton tank, which was armed with the Template:Convert M68 gun, the US version of the British Royal Ordnance L7.[5] Despite the introduction of the T-62, in 1969 their T-64 tank was rearmed with a new Template:Convert tank gun,[5] while in 1972 Nizhny Tagil began production of the T-72 tank, also armed with the Template:Convert gun.[6] At the fighting at Sultan Yakoub, during the 1982 Lebanon War, the Israeli government claimed to have destroyed nine Syrian T-72s with the Merkava main battle tank, armed with an Israeli version of the American M68 Template:Convert tank gun.[7] Whether true or not, the Soviets test-fired a number of Israeli M111 Hetz armor-piercing discarding sabot rounds at Kubinka, finding the Template:Convert round was able to perforate the sloped front section plate but not the turret armour of the T-72 tank.[8] In response, the Soviets developed the T-72M1.[9] This led Israel to opt for a 120 mm tank gun during the development process of the Merkava III main battle tank.[10] This case is similar to the American decision to replace the M68 Template:Convert tank gun with Rheinmetall's 120 mm gun in 1976; the introduction of the T-64A had raised the question within the armour community of whether the new ammunition for the existing gun calibre could effectively defeat the new Soviet tank.[11]

In 1963, Germany and the United States had already embarked on a joint tank program, known as the MBT-70. The new tank carried a crew of three, with the driver in the turret, an automatic loader for the main gun, a Template:Convert autocannon as secondary armament, an active hydropneumatic suspension and spaced armour on the glacis plate and front turret.[12] The new tank concept also had improved armament, a Template:Convert missile-launching main gun, designed to fire the MGM-51 Shillelagh anti-tank missile.[13] However, the German Army was interested in a tank gun which could fire conventional ammunition. Although there were attempts to modify the Template:Convert tank gun to do so, the process proved extremely difficult, and the Germans began development of the future Rheinmetall 120 mm gun instead.[14]

File:M1-A1 Abrams Fire.jpg
An M1A1 Abrams, firing its US-built M256 120 mm tank gun

In 1967, the German ministry of defence decided to re-open a Leopard 1 improvement program, known as the Vergoldeter Leopard ('Gilded Leopard'), later renamed the Keiler ('Wild Boar'). Krauss-Maffei was chosen as the contractor, and two prototypes were developed in 1969 and 1970.[15] This program grew into the Leopard 2; the first prototype of the new tank was delivered in 1972, equipped with a Template:Convert smoothbore main gun. Between 1972 and 1975, a total of 17 prototypes were developed.[16] The new 120 mm gun's ten-year development effort ended in 1974.[2] Ten of the seventeen turrets built were equipped with 105 mm smoothbore guns, and the other seven were equipped with larger, 120 mm, guns.[17] Another program aimed to mount the Template:Convert missile-gun was also begun in an attempt to save components from the MBT-70, but in 1971 the program was ended for economic reasons.[18] Instead, the Germans opted for Rheinmetall's 120 mm L/44 smoothbore tank gun.[19]

Design features

File:Rheinmetall 120 mm gun-inside-muzzle view PNr°0109.JPG
The smoothbore barrel of an Austrian Leopard 2A4

Rheinmetall's L/44 tank gun has a calibre of 120 mm, a length of 44 calibres (Template:Convert), and a chamber volume of 10.2 liters (622.44 in3).[20][21] The gun's barrel weighs Template:Convert,[22] and on the M1 Abrams the gun mount weighs Template:Convert,[23] while the new barrel (L/55) is 55 calibres long, Template:Convert longer. The bore evacuator and the gun's thermal sleeve, designed to regulate the temperature of the barrel, are made of glass-reinforced plastic, while the barrel has a chrome lining to increase barrel life.[2] Originally the gun had an EFC barrel life of ~1,500 rounds,[24] but with recent advances in propellant technology, the average life has increased even further.[25] The gun's recoil mechanism is composed of two hydraulic retarders and a hydropneumatic assembly.[2]

Variants

Rh-120 L/44 120mm

Production of the German Leopard 2 and the new 120 mm tank gun began in 1979, fulfilling an order for the German Army.[26] The L/44 Extreme Service Condition Pressure (ESCP) is Template:Convert, the Permissible Maximum Pressure (PMP) Template:Convert, and the Design Pressure from Template:Convert.[27] Although the American M1 Abrams was originally armed with the M68A1 105 mm gun (a version of the L7),[28] the United States Army had planned to fit the tank with a larger main gun at a later date,[29] and the tank's turret had been designed to accommodate a larger 120 mm gun.[28] The larger gun was integrated into the M1A1 Abrams, with the first vehicle coming off the production line in 1985[30] The gun, known as the M256, was based on the L/44 tank gun, although manufactured at Watervliet Arsenal. Tanks armed with versions of Rheinmetall's gun produced under licence include Japan's Type 90[31] and South Korea's K1A1.[32] The M256 based on the L/44 when firing M829A1 Armor Piercing, Fin Stabilized, Discarding Sabot - Tracer (APFSDS-T) ammunition can attain a Peak Chamber Pressure of Template:Convert at Template:Convert and Template:Convert at Template:Convert.[33]

Rh-120 L/55 120mm

File:Strong Europe Tank Challenge 2018 (41878060365).jpg
Leopard 2A6 of the German Army with 120 mm L/55

The appearance of new Soviet tanks such as the T-80B during the late 1970s and early 1980s led to the development of new technologies and weapons to counter the threat posed to Western armour.[34] The T-80B had increased firepower[35] and new composite ceramic armour.[36] The T-72 also went through a modernization program in an attempt to bring it up to the standards of the T-80B. In 1985 the new T-72B version entered production, with a new laminate armour protection system; its turret armour, designed mainly to defeat anti-tank missiles, surpassed the T-80B's in protection.[37]

The German government began developing the Leopard 3, although this was canceled after the fall of the Soviet Union.[38] On 29 October 1991, the governments of Switzerland, the Netherlands and Germany agreed to cooperate in the development of a modernization program for the Leopard 2. Part of this program included the introduction of a longer 120 mm tank gun,[39] a cheaper alternative to a new tank gun,[40] increasing the maximum range of the gun by an estimated Template:Convert. Although the gun is longer, allowing for longer and a higher peak pressure from the propellant, the geometry remains the same, allowing the gun to fire the same ammunition as that fired from the shorter version.[41] The longer barrel allows ammunition to attain higher velocities; for example, with new kinetic energy penetrators ammunition can reach velocities of around Template:Convert.[42] The new barrel weighs Template:Convert.[22]

The longer tank gun has been retrofitted into the Leopard 2, creating a model known as the Leopard 2A6.[40] The Spanish Leopard 2E, the Greek Leopard 2HEL, and derivatives of the Leopard 2A6, use 55 calibre-long tank guns.[43]

Rh-120 L/55 A1 120mm

The Rh-120-55 A1 is similar to earlier Rh-120 L/55 model. Compared to the L/44 and L/55, the L/55 A1 Extreme Service Condition Pressure (ESCP) is raised from Template:Convert, the Permissible Maximum Pressure (PMP) from Template:Convert, and the Design Pressure from Template:Convert. It is also known as the L/55A1 and entered service in 2018.[27]

Template:Vanchor 130mm

File:Rheinmetall kf51 dynamisch hohe aufloesung 1XII0825.jpg
Panther KF51 with Rh-130 Future Gun System

Script error: No such module "anchor".Russia introduced a new generation of armoured vehicles like the T-14 Armata tank in 2015. In response, Rheinmetall started the development of a larger 130 mm tank gun, financed entirely using internal funding. The first technical demonstrator (TD) was completed in May 2016 and presented at Eurosatory 2016 in June 2016.[44]

The Rh-130 Future Gun System has a chrome-lined smoothbore barrel (initially L/51,[45] revised to L/52[46]) with a vertical sliding breech mechanism, increased chamber volume, no muzzle brake, a thermal sleeve, and a muzzle reference system (MRS) enabling it to be boresighted on a more regular basis without the crew needing to leave the platform. Compared to the Template:Convert 120 mm gun, the 130 mm has a Template:Convert barrel and an all-up weight of Template:Convert including the recoil system. Rheinmetall is developing a new generation APFSDS round featuring a semi-combustible cartridge case, new propellant, and new advanced long rod tungsten penetrator, and a high-explosive air-bursting munition (HE ABM) based on the 120 mm DM11 HE ABM in parallel with the gun. The cartridges of 130 x 850 mm are Template:Convert and Template:Convert long with the increase of 8% in calibre resulting in 50% more kinetic energy over the 120 mm gun. The chamber volume was increased by 50% compared to the 120 mm gun in the first 130 mm demonstrator gun, but is subject to further refinement.[45][47] Comparing pressure levels in the 120 mm L/55 A1 gun and in the 130 mm prototype, Extreme Service Condition Pressure climbs from Template:Convert, Permissible Maximum Pressure from Template:Convert, and Design Pressure from Template:Convert.[20]

Engineers believe the weapon can only be used with an automatic loader and new turret design. The gun commenced static firing trials at Rheinmetall's proving ground following Eurosatory, while engineers hoped to receive a new NATO standard by the end of 2016, although development of the gun and ammunition will likely take 8–10 years. The 130 mm is designed to equip the Main Ground Combat System (MGCS), a joint effort between Germany and France to produce a successor to the Leopard 2 and Leclerc, possibly to be launched between 2025 and 2030.[48][49][50] In July 2020, Rheinmetall unveiled a testbed tank for the gun in a new turret, mounted on a Challenger 2 hull.[51][52] In June 2022, Rheinmetall unveiled the Panther KF51 concept tank based on a Leopard 2 chassis and a redesigned turret hosting the new gun. According to Rheinmetall the Rh-130 mm cannon enables a 50% longer kill range compared to their 120 mm cannon with a higher rate of fire due to a fully automated ammunition handling system.[46]

M256

Script error: No such module "Labelled list hatnote". The M256 is an American variant that uses a Rh-120 L44 gun tube and combustible cartridges with an American-designed mount, cradle and recoil mechanism. It is primarily used by the A1 and later models of the M1 Abrams main battle tank. The M256 differs from the Rh-120 L44 in several aspects:

  • The M256 uses a concentric recoil spring instead of a separate buffer and recuperator hydraulic cylinders.[53]
  • The M256 features a cylinder-shaped cradle which also works as the recoil cylinder and holds the spring inside (the so-called concentric hydrospring recoil mechanism).Script error: No such module "Unsubst".

Ammunition

File:USARMY-M829A2.gif
American M829A2 APFSDS DU round

A variety of rounds have been developed for Rheinmetall's tank gun. For example, a long line of armour-piercing discarding sabot (APDS) rounds was developed by Rheinmetall. Originally, the Leopard 2 was outfitted with the DM23 kinetic energy penetrator,[54] based on the Israeli 105 mm M111 Hetz which itself was a licensed copy of the American M735 round.[55] The DM23 was eventually replaced by the DM33, which was also adopted by Japan, Italy, Netherlands and Switzerland. The DM33 has a three-part aluminium sabot and a two-part tungsten penetrator, and is said to be able to penetrate Template:Convert of steel armour at a range of Template:Convert.[56] The DM43 is a further development of this round, codeveloped between Germany and France. The introduction of the longer barrel came together with the introduction of a new kinetic energy penetrator, the DM53. With the projectile including sabot weighing 8.35 kilograms with a 38:1 length to diameter ratio and with a muzzle velocity of Template:Convert, the DM53 has an effective engagement range of up to Template:Convert.[57] A further development, called the DM63, improved upon the round by introducing a new temperature-independent propellant, which allows the propellant to have a constant pattern of expansion between ambient temperatures inside the gun barrel from Template:Convert to Template:Convert. The new propellant powders, known as surface-coated double-base (SCDB) propellants, allow the DM63 to be used in many climates with consistent results.[58] The new ammunition has been accepted into service with the Dutch and Swiss, as well as German, armies.[59]

In 1993, South Korea invented a self-sharpening process on the tungsten heavy alloy (WHA) by applying microstructure control and multi-stage cyclic heat-treatment.[60][61] Most penetrators in the world receive a single heat treatment, while Korean penetrators are treated 20 times using the new technology, which increases impact toughness by 300%.[62] The self-sharpening effect increases penetration by 8–16% compared to regular penetrators, and compensates 6–10% less penetration from material disadvantage against depleted uranium (DU), providing firepower similar to DU ammunition in a DU particle-free environment. South Korea holds related patents in Japan, United Kingdom, United States, and 3 other unspecified nations.[63][64] The public appearance of the K276 armour-piercing fin-stabilized discarding sabot (APFSDS), the first 120 mm ammunition with self-sharpening penetrator, was during the release ceremony of K1A1 prototype in 1996.[65]

The United States developed its own kinetic energy penetrator (KEP) tank round in the form of an APFSDS round, using a DU alloy long-rod penetrator (LRP), designated the M829,[66] followed by improved versions. An immediate improvement, known as the M829A1, was called the "Silver Bullet" after its good combat performance during the Gulf War against Iraqi T-55, T-62 and T-72 tanks.[67] The M829 series centres around the depleted uranium penetrator, designed to penetrate enemy armour through kinetic energy and to shatter inside the turret, doing much damage within the tank.[68] In 1998, the United States military introduced the M829A2, which has an improved depleted uranium penetrator and composite sabot petals.[69] In 2002, production began of the ($10,000 per round) M829A3, using a more efficient propellant (RPD-380 stick),[70] a lighter injection-molded sabot, and a longer (800 mm) and heavier (10 kg / 22 lb) DU penetrator, which is said to be able to defeat the latest versions of Russian Kontakt-5 explosive reactive armour (ERA).[71] This variant is unofficially referred to by Abrams tank crews as the "super sabot".[72] In response to the M829A3, the Russian Army designed the Relikt, the most modern Russian ERA, which is claimed to be twice as effective as the Kontakt-5. A further improved M829A4 round with a segmented penetrator to defeat Relikt entered full-rate production in December 2015.[73]

Both Germany and the United States have developed several other rounds. These include the German DM12 multi-purpose anti-tank projectile (MPAT), based on the technology in a high-explosive anti-tank (HEAT) warhead.[54] However, it was found that the DM12's armour-killing abilities were limited by the lack of blast and fragmentation effects, and that the round was less valuable against lightly armoured targets.[74] The United States also has an MPAT-type projectile, named M830,[75] later developed into the M830A1, which allows the M1 Abrams to use the round against helicopters.[76] The M1 Abrams can use the M1028 canister round, which is an anti-personnel-anti-helicopter munition, packed with over 1,000 10 mm tungsten balls.[77] The United States Armed Forces accepted a new demolition round, called the M908 obstacle defeating round, based on the M830A1 MPAT, but with the proximity fuse replaced by a hardened nose cap. The cap allows the round to impact and embed itself in concrete, exploding inside the target and causing more damage.[78]

The Israeli Army introduced a new round known as the laser homing anti-tank (LAHAT) projectile.[79] Using a semi-active laser homing guidance method, the LAHAT can be guided by the tank's crew or by teams on the ground, while the missile's trajectory can be selected to attack either from the top (to defeat enemy armour) or frontally (to engage enemy helicopters). The missile can be fired by both Template:Convert and Template:Convert tank guns.[80] The LAHAT has been offered as an option for the Leopard 2, and has been marketed by both Israel Military Industries and Rheinmetall to Leopard 2 users.[81] Israeli Merkava tanks make use of the APAM round, an anti-personnel munition designed to release fragmentation at controlled intervals to limit the extent of damage. Fragments are shaped to have enough kinetic energy to penetrate body armour.[82] Poland has introduced a series of projectiles for Rheinmetall's tank gun, including an armour-piercing penetrator target practice round (APFSDS-T-TP), a high-explosive round, and a high-explosive target practice (HE-TP) projectile. The ammunition is manufactured by Zakłady Produkcji Specjalnej Sp. z o.o.[83]

In early 2013 Rheinmetall announced two new rounds suitable for the L44 and the L55 guns, the DM11 HE round, designed for lightly armoured targets, field fortifications and targets behind cover, a lower cost alternative to the DM11, the HE SQ Rh31. [84]

In April 2024, the British Ministry of Defence announced that a statement of intent had been signed with Germany for the development of an Enhanced Kinetic Energy (EKE) armour-piercing round for both Challenger 3 and Leopard 2 tanks by Rheinmetall BAE Systems Land.[85]

Ammunition table

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Operators

File:120mm Rheinmetall operators.png
Map with Rheinmetall 120 mm operators in blue with former operators in red (none)Template:Image reference needed

Due to tank sales, Rheinmetall's L/44 tank gun has been manufactured for other nations. For example, the Leopard 2 armed with the 44 calibre long gun, has been sold to the Netherlands, Switzerland, Sweden, Spain, Austria, Denmark, Finland, and other countries.[86] Egypt had manufactured 700–800 M1A1 Abrams by 2005,[87] and in 2008 requested permission to build another 125 tanks; their M256 main guns (the US version of the L/44) were manufactured by the US Watervliet Arsenal.[88] The M1A1 has also been exported to Australia,[89] while the M1A2 Abrams has been exported to Saudi Arabia and Kuwait.[90] The American license-built M256 has also been offered by General Dynamics Land Systems as part of the M60-2000 main battle tank which would upgrade older M60 Patton tanks to have capabilities of their M1A1 Abrams at a reduced cost, though the company has not yet found a buyer.Script error: No such module "Unsubst".

Use of Rheinmetall's L/44 tank gun
Tank Designer Country of origin Gun UsersScript error: No such module "Unsubst".
Leopard 2 Krauss-Maffei Template:Flagcountry Rheinmetall 120 mm L/44 Austria, Canada, Chile, Denmark, Finland, Greece, Hungary, Indonesia, the Netherlands,
Norway, Poland, Portugal, Singapore, Spain, Sweden, Switzerland, Turkey, Ukraine.
Stridsvagn 122 KMW, Land Systems Hägglunds AB Template:FlagcountryTemplate:Flagcountry Rheinmetall 120 mm L/44 Sweden, Ukraine
Boxer RCT120 Krauss-Maffei Template:Flagcountry Rheinmetall 120 mm L/44 No known user [91]
Type 90 Mitsubishi Heavy Industries Template:Flagcountry Rheinmetall 120 mm L/44 Japan
M1 Abrams General Dynamics Land Systems
(formerly Chrysler Defense) 		Template:Flagcountry M256 (L/44) from the M1A1 onwards Australia, Egypt, Iraq, Kuwait, Morocco, Poland, Taiwan,[92] Saudi Arabia, Ukraine.
M60-2000 General Dynamics Land Systems Template:Flagcountry M256 (L/44) No known user
M60A3 SLEP Raytheon Template:Flagcountry M256 (L/44) No known user [93]
K1A1 Hyundai Rotem Template:Flagcountry KM256 (L/44) from the K1A1 onwards South Korea

The Leopard 2A6 and its longer L/55 main gun have been exported for use by the Canadian Army, and the Netherlands upgraded part of its original fleet of Leopard 2s with the more powerful armament.[94] The British Army has tested Rheinmetall's longer gun, possibly looking to replace the current L30A1 120 mm L/55 rifled main gun on the Challenger 2.[95] Two Challenger 2s were modified to undergo firing trials.[96] Although the South Korean K2 Black Panther is equipped with a CN08 120 mm L/55 main gun and is often misunderstood as a licensed product of the German counterpart due to its similar appearance of the gun barrel, it is indigenously developed by Agency for Defense Development (ADD) and WIA (Now Hyundai WIA), a Korea-based powertrain company affiliated with Hyundai Kia Motors Group.[97]

Use of Rheinmetall's L/55 tank gun
Tank Designer Country of origin Gun UsersScript error: No such module "Unsubst".
Leopard 2A6 Krauss-Maffei Wegmann Template:Flagcountry Rheinmetall 120 mm L/55 Canada, Finland, Germany, Greece, Netherlands, Portugal, Spain, Ukraine
Leopard 2A7 Denmark, Qatar
Leopard 2A7V / 2A7+ Krauss-Maffei Wegmann Template:Flagcountry Rheinmetall 120 mm L/55A1[98] Germany, Hungary [99][100]
Leopard 2A8 Germany, Norway [101]
Stridsvagn 123 KMW, Land Systems Hägglunds AB Template:FlagcountryTemplate:Flagcountry Sweden [102]
KF51 EVO Joint venture Rheinmetall / N7 Template:FlagcountryTemplate:Flagcountry Hungary (in development)[103]
Challenger 3 Rheinmetall BAE Systems Land Template:Flagcountry United Kingdom (in development)

See also

Weapons of comparable role, performance and era

Notes

Template:Reflist

Sources

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External links

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Template:Rheinmetall Template:Main other

  1. ↑ Rheinmetall, Leopard 2: the world's most advanced main battle tank, accessed 9 January 2009
  2. ↑ a b c d Jane's Armour & Artillery (subscription), Rheinmetall 120 mm L44 smoothbore gun (Germany) Template:Webarchive, accessed 6 November 2008, claims development began in 1964.
  3. ↑ Norman, p. 14
  4. ↑ Zaloga (1979), p. 20
  5. ↑ a b Zaloga (2004), p. 5
  6. ↑ Zaloga (2004), p. 7
  7. ↑ Warford (2006), pp. 23–24
  8. ↑ Warford (2006), p. 24
  9. ↑ Warford (2006), p. 25
  10. ↑ Katz (1997), 38
  11. ↑ Green (2005), 32–33
  12. ↑ Hilmes (2001), p. 17
  13. ↑ Zaloga (1982), p. 19
  14. ↑ McNaugher (1981), p. vi
  15. ↑ Jerchel (1998), p. 5
  16. ↑ Hilmes (2001), p. 18
  17. ↑ Jerchel (1998), p. 6
  18. ↑ Jerchel (1998), pp. 6–7
  19. ↑ Jerchel (1998), p. 7
  20. ↑ a b The development work 2016-2020, edrmagazine.eu, 05-03-2021
  21. ↑ Rheinmetall Defense, 120 mm L44 Tank Gun, accessed 9 November 2008; barrel length can be found by multiplying the caliber length by the caliber diameter.
  22. ↑ a b Maxwell (2002), p. 82
  23. ↑ Green (2005), p. 61
  24. ↑ Script error: No such module "citation/CS1". Script error: No such module "Unsubst".
  25. ↑ Script error: No such module "citation/CS1".
  26. ↑ Jerchel (1998), p. 11
  27. ↑ a b New 120 mm gun and ammunition; a 20% performance increase in the coming years, edrmagazine.eu, 05-03-2021
  28. ↑ a b Green (1992), p. 56
  29. ↑ Chait (2005), p. 12
  30. ↑ Green (2005), pp. 24–29
  31. ↑ Bolté (1997), p. 25
  32. ↑ Clemens (1999), p. 15; based on the United States' M256 gun.
  33. ↑ M256 120mm Smoothbore Gun
  34. ↑ Jerchel (1998), p. 24
  35. ↑ Baryatinskiy (2006), pp. 23–25
  36. ↑ Baryatinskiy (2006), p. 14
  37. ↑ Zaloga (1993), p. 10
  38. ↑ Jerchel (1998), pp. 33–34
  39. ↑ Jerchel (1998), p. 34
  40. ↑ a b Hilmes (2004), p. 76
  41. ↑ Jane's Armour & Artillery Upgrades (subscription), Rheinmetall 120 mm L55 smoothbore gun (Germany), accessed 10 November 2008
  42. ↑ Rheinmetall Defence, 120 mm L55 Tank Gun Template:Webarchive, accessed 10 November 2008
  43. ↑ Candil (2007), p. 66
  44. ↑ What future for tank guns? The Rheinmetall view, edrmagazine.eu, 05-03-2021
  45. ↑ a b Script error: No such module "citation/CS1".
  46. ↑ a b Script error: No such module "citation/CS1".
  47. ↑ Why 130 mm and not a bigger calibre?, edrmagazine.eu, 05-03-2021
  48. ↑ German Rheinmetall works on new 130mm tank gun Template:Webarchive – Defensenews.com, 15 June 2016
  49. ↑ Script error: No such module "citation/CS1".
  50. ↑ Rheinmetall Ups Tank Firepower with new 130mm Gun Template:Webarchive – Defense-Update.com, 14 June 2016
  51. ↑ Script error: No such module "citation/CS1".
  52. ↑ Army Recognition, [Rheinmetall from Germany unveils new Main Battle Tank MBT with 130mm cannon https://www.armyrecognition.com/defense_news_july_2020_global_security_army_industry/rheinmettall_unveils_new_leopard_tank_mbt_with_130mm_cannon.html Template:Webarchive], 31.07.2020 Script error: No such module "Unsubst".
  53. ↑ Script error: No such module "citation/CS1".Script error: No such module "Unsubst".
  54. ↑ a b Jerchel (1998), p. 22
  55. ↑ Jane's Ammunition Handbook (subscription), 105 mm M111 IMI APFSDS-T round (Israel), Tank and anti-tank guns, accessed 11 November 2008
  56. ↑ Stridsfordon idag och imorgon, [1]Template:Webarchive 120 mm Stridsfordon idag och imorgon Template:Webarchive (Combat vehicles today and tomorrow) (Sweden), accessed 8 November 2012
  57. ↑ Eshel (2005), p. 96.
  58. ↑ Hilmes (2007), p. 93.
  59. ↑ Jane's Ammunition Handbook (subscription), 120 mm DM53 and DM63 LKE II APFSDS-T round (Germany) Template:Webarchive, accessed 11 November 2008
  60. ↑ Script error: No such module "citation/CS1".
  61. ↑ Script error: No such module "citation/CS1".
  62. ↑ Script error: No such module "citation/CS1".
  63. ↑ Script error: No such module "citation/CS1".
  64. ↑ Script error: No such module "citation/CS1".
  65. ↑ Script error: No such module "citation/CS1".
  66. ↑ Green (2005), p. 68.
  67. ↑ Green (1992), p. 74
  68. ↑ Green (1992), pp. 76–77.
  69. ↑ Green (2005), p. 69.
  70. ↑ Script error: No such module "citation/CS1".
  71. ↑ Green (2005), p. 70.
  72. ↑ Script error: No such module "citation/CS1".
  73. ↑ Template:Cite report
  74. ↑ Eshel (2005), p. 98.
  75. ↑ Green (2005), p. 71.
  76. ↑ Fogg (1994), p. 12.
  77. ↑ Green (2005), p. 72.
  78. ↑ Hilmes (2007), pp. 92–93.
  79. ↑ Jane's Armour & Artillery Upgrades (subscription), Israel Aerospace Industries LAser Homing Anti-Tank (LAHAT) projectile (Israel), Gun-launched guided projectiles, accessed 13 November 2008
  80. ↑ Gelbart (2004), pp. 40–41
  81. ↑ Eshel (2005), p. 100
  82. ↑ Eshel (2003), p. 46
  83. ↑ Bumar, 120 mm Rounds for Rh 120 L 44 Tank Gun
  84. ↑ Script error: No such module "citation/CS1".
  85. ↑ Script error: No such module "citation/CS1".
  86. ↑ Jerchel (1998), pp. 36–42
  87. ↑ Green (2005), p. 25
  88. ↑ Defense Industry Daily, Egypt: $889M Request for 125 M1A1 Tanks Template:Webarchive, accessed 9 November 2008
  89. ↑ Jane's Defence Weekly (subscription), Australia prepares for M1A1s, accessed 9 November 2008
  90. ↑ Green (2005), p. 34
  91. ↑ Script error: No such module "citation/CS1".
  92. ↑ Script error: No such module "citation/CS1".
  93. ↑ Script error: No such module "citation/CS1".
  94. ↑ Defense Industry Daily, Tanks for the Lesson: Leopards, too, for Canada Template:Webarchive, accessed 10 November 2008
  95. ↑ Rheinmetall Defence, Rheinmetall 120 mm smoothbore technology for Britain's Challenger, accessed 10 November 2008
  96. ↑ Hilmes (2007), p. 88
  97. ↑ Template:Cite report
  98. ↑ Script error: No such module "citation/CS1".
  99. ↑ Script error: No such module "citation/CS1".
  100. ↑ Script error: No such module "citation/CS1".
  101. ↑ Script error: No such module "citation/CS1".
  102. ↑ Script error: No such module "citation/CS1".
  103. ↑ Script error: No such module "citation/CS1".
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