View source for Engineering:CN08 120 mm gun

{{Infobox weapon
| name               = CN08 120 mm L/55
| image              = CN08 120 mm gun.jpg
| image_size         = 300
| alt                = 
| caption            = [[Engineering:Gun barrel|Gun barrel]] of the CN08
| type               = [[Engineering:Smoothbore#Artillery|Smoothbore]] [[Engineering:Tank gun|tank gun]]
| origin             = South Korea
<!-- Type selection -->
| is_ranged          = yes
| is_artillery       = yes
| is_UK              = 
<!-- Service history -->
| service            = 2014–present
| used_by            = See ''Operators''
| wars               = 
<!-- Production history -->
| designer           = Agency for Defense Development <br />WIA
| design_date        = 2003–2008
| manufacturer       = Hyundai WIA
| unit_cost          = 
| production_date    = 
| number             = 
| variants           = [[Engineering:MKE 120 mm tank gun|MKE 120 mm tank gun]]
<!-- General specifications -->
| spec_label         = 
| mass               = Gun barrel: {{convert|1324|kg|lb|abbr=on}} <br />Gun mount: {{convert|3100|kg|lb|abbr=on}}
| length             = Gun barrel: {{convert|6.600|m|ft|abbr=on|sp=us}} <br />Gun mount: {{convert|7.118|m|ft|abbr=on|sp=us}}
| width              = 
| height             = 
| diameter           = 
| crew               = 
| passengers         = 
<!-- Ranged weapon specifications --> 
| cartridge          = 
| cartridge_weight   = 
| caliber            = [[Engineering:120×570mm NATO|120×570mm NATO]]
| barrels            = 
| action             = Automatic opening and closing mechanism
| rate               = 10 rds/min
| range              = [[Engineering:Armour-piercing fin-stabilized discarding sabot|APFSDS-T]]: {{convert|3000|m|yd|sp=us}}<ref name="WIA">{{cite web|url=http://www.hyundai-wia.com/lib/common/download.asp?file=%2Fupload%2Fdownload%2FDefense_Land.pdf|title=Gun & Artillery System|publisher=Hyundai WIA|date=|archiveurl=https://web.archive.org/web/20211014145605/http://www.hyundai-wia.com/lib/common/download.asp?file=%2Fupload%2Fdownload%2FDefense_Land.pdf|archivedate=14 October 2021|accessdate=14 October 2021|author=}} p. 3</ref> <br />KSTAM-I: {{convert|5000|m|yd|sp=us}}<ref name="KSTAM">{{cite web|url=https://www.koreascience.or.kr/article/JAKO200626055835151.pdf|title=A Trade Study of the Top Attack Smart Tank Ammunition|publisher=Journal of the Korea Society of Systems Engineering|date=31 January 2006|archiveurl=https://web.archive.org/web/20211017052608/https://www.koreascience.or.kr/article/JAKO200626055835151.pdf|archivedate=17 October 2021|accessdate=17 October 2021|author=Agency for Defense Development}}</ref> <br />KSTAM-II: {{convert|8000|m|yd|sp=us}}<ref name="KSTAM" />
| feed               = Automatic feeding endless belt magazine
| sights             = 
<!-- Artillery specifications -->
| breech             = Vertically sliding
| recoil             = Eccentric hydro-pneumatic
| carriage           = 
| elevation          = 
| traverse           = 
}}

The '''CN08''' ('''Cannon 08''') is a 120&nbsp;mm 55-caliber smoothbore gun produced by Hyundai WIA. It is incorrectly known as the licensed production of the [[Engineering:Rheinmetall Rh-120|Rheinmetall Rh-120 L/55]], but it was indigenously developed by the Agency for Defense Development and WIA (now Hyundai WIA) from 2003 to 2008 for the [[Engineering:K2 Black Panther|XK2]] development project started in 1995.<ref>{{cite web|url=https://file.mt.co.kr/newfiledown.php?filepath=2016%2F01&filen=I_Machinery_20160105_SK_1823257457_102350.pdf|title=방위산업, 저성장 시대의 대안|publisher=SK Securities|date=5 January 2016|archiveurl=https://web.archive.org/web/20211028082233/https://file.mt.co.kr/newfiledown.php?filepath=2016%2F01&filen=I_Machinery_20160105_SK_1823257457_102350.pdf|archivedate=28 October 2021|accessdate=28 October 2021|author=Lee Ji-hoon}} p. 14</ref> The development was completed after the field test ended in September 2008.

== Design ==
[[File:CN08 120 mm gun horizontal.png|thumb|305px|left|A gun mount of CN08]]
[[File:Laser reflector assembly of CN08 (cropped).png|thumb|200px|left|Laser reflector of dynamic muzzle reference system]]

The CN08 is the main armament of the [[Engineering:K2 Black Panther|K2 Black Panther]], and the [[Engineering:Gun barrel|gun barrel]] is applied with internal [[Engineering:Chrome plating#Arms use|chrome plating]] technology for the large-caliber gun. The gun barrel can endure a high explosive force as a result of the increased stiffness and wear resistance provided by this internal chromium surface.<ref name="CCC">{{cite web|url=http://koreascience.or.kr/article/JAKO200503018552216.pdf|title=Effect of CCC Composition on Burning Characteristic for 120mm Kinetic Energy Ammunition|publisher=Korea Science|date=30 December 2005|archiveurl=https://web.archive.org/web/20211019095419/http://koreascience.or.kr/article/JAKO200503018552216.pdf|archivedate=19 October 2021|accessdate=19 October 2021|author=Agency for Defense Development}}</ref><ref>{{cite web|url=https://www.itfind.or.kr/Report02/201112/KIAT-1350.pdf|title=시뮬레이션 기법을 이용한 장축 실린더 내경도금의 전류분포 기술지원|publisher=Ministry of Knowledge Economy|date=1 July 2008|archiveurl=https://web.archive.org/web/20211014045309/https://www.itfind.or.kr/Report02/201112/KIAT-1350.pdf|archivedate=14 October 2021|accessdate=14 October 2021|author=Cotec}}</ref><ref>{{cite web|url=https://www.koreascience.or.kr/article/JAKO201535258425757.pdf|title=Study On Effect of Fe Density on Electrolyte Exfoliation of Chromium Plating Layer|publisher=Korea Science|date=7 October 2015|archiveurl=https://web.archive.org/web/20211014043107/https://www.koreascience.or.kr/article/JAKO201535258425757.pdf|archivedate=14 October 2021|accessdate=14 October 2021|author=Defense Agency for Technology and Quality}}</ref> The main components, including the breech ring, [[Engineering:Breechblock|breech block]] and [[Engineering:Thermal sleeve|thermal sleeve]], are simplified and designed lightly, the gun barrel weighs {{convert|1324|kg|lb|abbr=on}} and the gun mount weighs {{convert|3100|kg|lb|abbr=on}}.

The gun mount consists of an eccentric [[Engineering:Hydraulic recoil mechanism|hydro-pneumatic recoil]] system with oil reservoir for the gun barrel and is complemented by a bustle type [[Engineering:Autoloader|autoloader]] powered by a main gun controller combined with a breech opening motor that automatically opens and closes the gun tube,<ref name="WIA" /> it can fire up to 10 rounds a minute.

The maximum permissible [[Engineering:Chamber pressure|pressure]] of the gun barrel is 744&nbsp;MPa (108,000&nbsp;psi),<ref>{{cite web|url=https://gall.dcinside.com/mgallery/board/view/?id=war&no=3666019|title=아덱스 다녀와써 (2부 / 한화, 현대, 기아) - 군사 마이너 갤러리|publisher=DC Inside|date=22 October 2023|archiveurl=https://web.archive.org/web/20231107152121/https://gall.dcinside.com/mgallery/board/view/?id=war&no=3666019|archivedate=7 November 2023|accessdate=7 November 2023|author=PION}}</ref> and when the [[Engineering:Tank gun|tank gun]] fires an improved K279 [[Engineering:Armour-piercing fin-stabilized discarding sabot|APFSDS]], the maximum proof pressure is {{convert|690|MPa|psi|0|abbr=on}}, and the [[Physics:Muzzle velocity|muzzle velocity]] is {{convert|1800|m/s|ft/s|abbr=on}}.<ref name="K279 Improved"/> It depends on the type of ammunition, but the effective firing range of the tank gun is {{convert|8000|m|yd|sp=us}}.<ref name="KSTAM" /><ref>{{cite web|url=http://journal.kadis.or.kr/UPFILE/PUBLICATION_FILE/J2016048/160104.pdf|title=Systems Analysis on Smart Ammunition for 120mm Tank Gun|publisher=Korea Association of Defense Industry Studies|date=June 2009|archiveurl=https://web.archive.org/web/20220330053548/http://journal.kadis.or.kr/UPFILE/PUBLICATION_FILE/J2016048/160104.pdf|archivedate=30 March 2022|accessdate=30 March 2022|author=Poongsan Technology Institute}}</ref>

=== Dynamic muzzle reference system ===
The main armament has a dynamic [[Physics:Muzzle reference system|muzzle reference system]] (DMRS) consisting of a laser reflector, a laser emitter and a vertical sensor unit (VSU). A laser reflector assembly attached to the top of the thermal sleeve is provided to be adapted to a dynamic muzzle reference system to [[Physics:Electro-optics|electro-optically]] measure the accurate position of the muzzle. The [[Engineering:Gyroscope#Variations|mechanical gyroscope]] type vertical sensor unit, which calculates the lead angle and [[Elevation (ballistics)#Superelevation|superelevation]] in real time to correct the misalignment of the aim, allows the tank to more accurately hit its intended target even when it is maneuvering on irregular [[Terrain|terrain]].<ref>{{cite web|url=https://www.koreascience.or.kr/article/JAKO201613752757718.pdf|title=A Study on Measurement of Gun's Attitude of K2 MBT Using Inertial Navigation System and Its Effects on the Hit Probability|publisher=Korea Science|date=5 April 2016|archiveurl=https://web.archive.org/web/20210707055320/https://www.koreascience.or.kr/article/JAKO201613752757718.pdf|archivedate=7 July 2021|accessdate=7 July 2021|author=[[Company:Hyundai Rotem|Hyundai Rotem]]}}</ref>

=== Ammunition ===
[[File:K279 APFSDS-T and K277 HEAT-MP-T of Poongsan Corporation.jpg|thumb|305px|Inside the cartridge of the XK279 APFSDS-T produced by a sequential propellant filling process.]]
CN08's 120&nbsp;mm round is produced in {{ill|Poongsan Corporation|ko|풍산 (기업)}}, a South Korean ammunition manufacturer, and can fire [[Engineering:120×570mm NATO|120×570&nbsp;mm NATO]] tank ammunition.

{| class="wikitable"
|+APFSDS Rounds<ref name="Ammunition"/><ref name="K279 Improved"/><ref name="CCC"/><ref name="Poongsan">{{cite web|url=https://pdf4pro.com/cdn/ammunition-amp-explosives-poongsan-b8ba4.pdf|title=Ammunition and Explosives|publisher=|date=|archiveurl=https://web.archive.org/web/20211017044902/https://pdf4pro.com/cdn/ammunition-amp-explosives-poongsan-b8ba4.pdf|archivedate=17 October 2021|accessdate=17 October 2021|author=Poongsan Corporation}}</ref><ref name="Poongsan2020">{{cite web|url=https://www.madex.co.kr:453/board/download.asp?filename1=%ED%92%8D%EC%82%B0_%EA%B5%AD%EB%AC%B8.pdf&filename=20210426124003_4.pdf&mode=company|title=풍산탄약|publisher=MADEX|date=2020|archiveurl=https://web.archive.org/web/20211014072708/https://www.madex.co.kr:453/board/download.asp?filename1=%ED%92%8D%EC%82%B0_%EA%B5%AD%EB%AC%B8.pdf&filename=20210426124003_4.pdf&mode=company|archivedate=14 October 2021|accessdate=14 October 2021|author=Poongsan Corporation}}</ref><ref>{{cite web|url=https://www.koreascience.or.kr/article/JAKO202013261023155.pdf|title=Study on the Improving Penetration Performance of Tungsten Heavy Alloy Penetrator by Heat Treatment|publisher=Korea Science|date=29 February 2020|archiveurl=https://web.archive.org/web/20211017060118/https://www.koreascience.or.kr/article/JAKO202013261023155.pdf|archivedate=17 October 2021|accessdate=17 October 2021|author=Defense Agency for Technology and Quality}}</ref><ref>{{cite web|url=http://www.koreascience.or.kr/article/JAKO200412910503137.pdf|title=Manufacturing of Tungsten Heavy Alloy Composites for Kinetic Energy Penetrator|publisher=Korea Science|date=1 October 2004|archiveurl=https://web.archive.org/web/20211017090545/http://www.koreascience.or.kr/article/JAKO200412910503137.pdf|archivedate=17 October 2021|accessdate=17 October 2021|author=Agency for Defense Development}}</ref><ref>{{cite web|url=https://koreascience.or.kr/article/CFKO201232164221307.pdf|title=Study on the Temperature Independent Property of the Surface Coated Double Base Propellant|publisher=The Korean Society of Propulsion Engineers|date=17 May 2012|archiveurl=https://web.archive.org/web/20211017063200/https://koreascience.or.kr/article/CFKO201232164221307.pdf|archivedate=17 October 2021|accessdate=17 October 2021|author=Sun-Kil Kwon}}</ref><ref>{{cite web|url=https://s1.pdfdrive.com/dl2.php?id=201257281&h=b8ef3e0680b27a0be31800ec8d06c781&u=cache&ext=pdf&n=105%C3%AB%C2%AF%C2%B8%C3%AB%C2%A6%C2%AC%20%C3%AB%C2%82%C2%A0%C3%AA%C2%B0%C2%9C%C3%AC%C2%95%C2%88%C3%AC%C2%A0%C2%95%C3%AC%C2%B2%C2%A0%C3%AA%C2%B0%C2%91%C3%AD%C2%83%C2%84%C3%AC%C2%9A%C2%A9%20%C3%AC%C2%98%C2%A8%C3%AB%C2%8F%C2%84%C3%AB%C2%91%C2%94%C3%AA%C2%B0%C2%90%C3%AC%C2%BD%C2%94%C3%AD%C2%8C%C2%85%C3%AC%C2%B6%C2%94%C3%AC%C2%A7%C2%84%C3%AC%C2%A0%C2%9C%20%C3%AC%C2%97%C2%B0%C3%AA%C2%B5%C2%AC%C3%A2%C2%85%C2%A0|title=Study on the Temperature Independent Property of the Surface Coated Propellant for 105mm Armor Piercing Fin Stabilized Discarding Sabot I|publisher=The Korean Society of Propulsion Engineers|date=December 2014|archiveurl=https://web.archive.org/web/20220329191517/https://s1.pdfdrive.com/dl2.php?id=201257281&h=b8ef3e0680b27a0be31800ec8d06c781&u=cache&ext=pdf&n=105%C3%AB%C2%AF%C2%B8%C3%AB%C2%A6%C2%AC%20%C3%AB%C2%82%C2%A0%C3%AA%C2%B0%C2%9C%C3%AC%C2%95%C2%88%C3%AC%C2%A0%C2%95%C3%AC%C2%B2%C2%A0%C3%AA%C2%B0%C2%91%C3%AD%C2%83%C2%84%C3%AC%C2%9A%C2%A9%20%C3%AC%C2%98%C2%A8%C3%AB%C2%8F%C2%84%C3%AB%C2%91%C2%94%C3%AA%C2%B0%C2%90%C3%AC%C2%BD%C2%94%C3%AD%C2%8C%C2%85%C3%AC%C2%B6%C2%94%C3%AC%C2%A7%C2%84%C3%AC%C2%A0%C2%9C%20%C3%AC%C2%97%C2%B0%C3%AA%C2%B5%C2%AC%C3%A2%C2%85%C2%A0|archivedate=29 March 2022|accessdate=29 March 2022|author=Tae Soo Kwon}}</ref><ref>{{cite web|url=https://s1.pdfdrive.com/dl2.php?id=201257288&h=7fd64900de1f86055dd9ac6a17be3fa2&u=cache&ext=pdf&n=105%EB%AF%B8%EB%A6%AC+%EB%82%A0%EA%B0%9C%EC%95%88%EC%A0%95%EC%B2%A0%EA%B0%91%ED%83%84%EC%9A%A9+%EC%98%A8%EB%8F%84%EB%91%94%EA%B0%90%EC%BD%94%ED%8C%85%EC%B6%94%EC%A7%84%EC%A0%9C+%EC%97%B0%EA%B5%AC%E2%85%A1|title=Study on the Temperature Independent Property of the Surface Coated Propellant for 105mm Armor Piercing Fin Stabilized Discarding Sabot II|publisher=The Korean Society of Propulsion Engineers|date=May 2015|archiveurl=https://web.archive.org/web/20220329194736/https://s1.pdfdrive.com/dl2.php?id=201257288&h=7fd64900de1f86055dd9ac6a17be3fa2&u=cache&ext=pdf&n=105%EB%AF%B8%EB%A6%AC+%EB%82%A0%EA%B0%9C%EC%95%88%EC%A0%95%EC%B2%A0%EA%B0%91%ED%83%84%EC%9A%A9+%EC%98%A8%EB%8F%84%EB%91%94%EA%B0%90%EC%BD%94%ED%8C%85%EC%B6%94%EC%A7%84%EC%A0%9C+%EC%97%B0%EA%B5%AC%E2%85%A1|archivedate=29 March 2022|accessdate=29 March 2022|author=Tae Soo Kwon}}</ref><ref name="Sheldon">{{cite web|url=https://blog.naver.com/jhst3103/221700833227|title=K274N / K276 / K279 APFSDS탄|publisher=Sheldon's Military|date=7 November 2019|archiveurl=https://web.archive.org/web/20220826094306/https://blog.naver.com/jhst3103/221700833227|archivedate=26 August 2022|accessdate=26 August 2022|author=}}</ref>
!Ammunition
!Compatible tank gun
!Type
!Penetrator
!Chamber pressure
!Muzzle velocity
!Ammunition weight
!Ammunition length
!Sub-projectile weight
!Sub-projectile length
!Penetrator weight with fin
!Penetrator length with fin
!Propellant type & weight
!RHA penetration
!Notes
|-
|K276
|CN03, CN08, M256
|APFSDS-T
|Tungsten composite
|586&nbsp;MPa
|1700&nbsp;m/s (L/44)
|19.7&nbsp;kg
|973&nbsp;mm
|7.35&nbsp;kg
|703.6&nbsp;mm
|
|600&nbsp;mm
|K683 ([[Physics:Propellant#Composition|Triple-base]])
|>600 mm (LoS at 60° obliquity) at 2000&nbsp;m
|Penetrators are manufactured by Cyclic Heat-Treatment and a Double-Cycle Sintering process.
|-
|K279 (XK279)
|CN08{{notetag|K279 is a round compatible with CN03 and M256 as well as CN08, but the high chamber pressure of K279 quickly reduces the life of the [[Engineering:Gun barrel|barrel]], so the South Korean Defense Acquisition Program Administration does not recommend using K279 for CN03 and M256 barrels.}}
|APFSDS-T
|Tungsten composite
|
|1760&nbsp;m/s (L/55)
|21.3&nbsp;kg
|998&nbsp;mm
|8.27&nbsp;kg
|761.6&nbsp;mm
|5&nbsp;kg
|
|8.6&nbsp;kg of L15190 (SCDB)
|>700 mm (LoS at 60° obliquity) at 2000&nbsp;m
|The penetrator is made of [[Chemistry:Tungsten|W]]-[[Chemistry:Nickel|Ni]]-[[Chemistry:Iron|Fe]]-[[Chemistry:Molybdenum|Mo]] Alloy.
|-
|K279 Improved
|CN08
|APFSDS-T
|Tungsten composite
|690&nbsp;MPa
|1800&nbsp;m/s{{efn-lr|When the round reaches the tip of the barrel, the muzzle velocity is 1,794.7&nbsp;m/s.}} (L/55)
|21.3&nbsp;kg
|998&nbsp;mm
|8.27&nbsp;kg
|761.6&nbsp;mm
|5&nbsp;kg
|
|8.6&nbsp;kg of 19-hole cylinder-type (SCDB)
|
|New DNDA-57 energetic plasticizer for stronger SCDB propellant.
|}

{| class="wikitable"
|+HEAT Rounds<ref name="Ammunition"/><ref name="Poongsan"/><ref name="Poongsan2020"/>
!Ammunition
!Compatible tank gun
!Type
!Filler
!Chamber pressure
!Muzzle velocity
!Ammunition weight
!Ammunition length
!Sub-projectile weight
!Sub-projectile length
!Filler weight
!Propellant type & weight
!RHA penetration
!Notes
|-
|K277
|CN03, CN08, M256
|HEAT-MP-T
|Comp-B
|448&nbsp;MPa
|1130&nbsp;m/s (L/44)
|24.5&nbsp;kg
|989&nbsp;mm
|14.31&nbsp;kg
|713.32&nbsp;mm
|
|K682 ([[Physics:Propellant#Composition|Triple-base]])
|600&nbsp;mm
|
|-
|K280 (XK280)
|CN03, CN08, M256
|HEAT-MP-T
|Comp-B
|
|1400&nbsp;m/s (L/55)
|23&nbsp;kg
|998&nbsp;mm
|11.38&nbsp;kg
|792.75&nbsp;mm
|2.1&nbsp;kg
|K684 ([[Physics:Propellant#Composition|Double-base]])
|
|
|}
{| class="wikitable"
|+Guided munition<ref name="KSTAM" /><ref>{{cite web|url=http://journal.kadis.or.kr/UPFILE/PUBLICATION_FILE/J2016048/160104.pdf|title=Systems Analysis on Smart Ammunition for 120mm Tank Gun|publisher=Korea Association of Defense Industry Studies|date=June 2009|archiveurl=https://web.archive.org/web/20220330053548/http://journal.kadis.or.kr/UPFILE/PUBLICATION_FILE/J2016048/160104.pdf|archivedate=30 March 2022|accessdate=30 March 2022|author=Kim, Hyeong Gyu}}</ref>
!Ammunition
!Compatible tank gun
!Type
!Filler
!Chamber pressure
!Muzzle velocity
!Ammunition weight
!Ammunition length
!Sub-projectile weight
!Sub-projectile length
!Minimum range
!Maximum range
!RHA penetration
!Notes
|-
|KSTAM-I
|CN08
|[[Engineering:Terminal guidance|Terminal guidance]]
|TSCW
|
|750&nbsp;m/s
|
|
|
|
|2500&nbsp;m
|5000&nbsp;m
|
|
|-
|KSTAM-II
|CN08
|[[Engineering:Fire-and-forget|Fire-and-forget]]
|EFP
|
|
|21.5&nbsp;kg
|985&nbsp;mm
|9.03&nbsp;kg
|
|2000&nbsp;m
|8000&nbsp;m
|
|
|}

== Export ==
=== Turkey ===
{{See|MKE 120&nbsp;mm tank gun}}

On July 29 2008, [[Company:Hyundai Rotem|Hyundai Rotem]] and [[Company:Otokar|Otokar]] signed a contract for technology transfer and design assistance for the Altay Tank Development Project. This contract includes technology transfer and design assistance for systems, armor package, and 120&nbsp;mm guns required for Altay tank development.<ref>{{cite web|url=https://www.hyundai-rotem.co.kr/PRCenter/News_View.asp?type=%EC%96%B8%EB%A1%A0%EB%B3%B4%EB%8F%84&idx=1415&ref=|title=터키 전차개발 기술협력 계약 체결|publisher=[[Company:Hyundai Rotem|Hyundai Rotem]]|date=31 July 2008|archiveurl=https://web.archive.org/web/20211010183718/https://www.hyundai-rotem.co.kr/PRCenter/News_View.asp?type=%EC%96%B8%EB%A1%A0%EB%B3%B4%EB%8F%84&idx=1415&ref=|archivedate=10 October 2021|accessdate=10 October 2021|author=[[Company:Hyundai Rotem|Hyundai Rotem]]}}</ref><ref>{{cite web|url=https://www.yna.co.kr/view/AKR20091011025000043|title='흑표' 기술수출료 2014년까지 사용유예|publisher=Yonhap News|date=11 October 2009|archiveurl=https://web.archive.org/web/20211010185746/https://www.yna.co.kr/view/AKR20091011025000043|archivedate=10 October 2021|accessdate=10 October 2021|author=Kim Gwigeun}}</ref><ref>{{cite web|url=https://www.hankyung.com/politics/article/2014101905821|title=[방산업계 울리는 ADD] 터키 수출 K-2전차 기술료 다 챙겨...'700억 돈잔치' 벌이겠다는 ADD|publisher=[[Finance:Korea Economic Daily|Korea Economic Daily]]|date=20 October 2014|archiveurl=https://web.archive.org/web/20211010202210/https://www.hankyung.com/politics/article/2014101905821|archivedate=10 October 2021|accessdate=10 October 2021|author=Choi Seunguk}}</ref><ref>{{cite web|url=https://www.armyrecognition.com/turkey_turkish_heavy_armoured_tanks_uk/altay_turkish_main_battle_tank_vehicle_technical_data_sheet_specifications_description_pictures_uk.html|title=Altay MBT Main Battle Tank|publisher=Army Recognition|date=1 October 2021|archiveurl=https://web.archive.org/web/20211024194638/https://www.armyrecognition.com/turkey_turkish_heavy_armoured_tanks_uk/altay_turkish_main_battle_tank_vehicle_technical_data_sheet_specifications_description_pictures_uk.html|archivedate=24 October 2021|accessdate=24 October 2021|author=Army Recognition}}</ref>

=== Poland ===

On July 27, 2022, Polish Armaments Group (PGZ) and Hyundai Rotem signed a framework agreement to supply 180 K2s and 820 K2PLs. The agreement will include rapid arms supply and extensive [[Engineering:Technology transfer|technology transfer]] from South Korea, and 180 K2s will be produced in South Korea and delivered to Poland from 2022, and 820 K2PLs will be produced in Poland under license from 2026.<ref name="Dziennik Zbrojny">{{cite web|url=http://dziennikzbrojny.pl/aktualnosci/news%2C1%2C11672%2Caktualnosci-z-polski%2Ckoreanskie-zamowienia-agencja-uzbrojenia-ujawnia-szczegoly|title=Koreańskie zamówienia – Agencja Uzbrojenia ujawnia szczegóły|publisher=Dziennik Zbrojny|date=24 July 2022|archiveurl=https://web.archive.org/web/20220731052845/http://dziennikzbrojny.pl/aktualnosci/news,1,11672,aktualnosci-z-polski,koreanskie-zamowienia-agencja-uzbrojenia-ujawnia-szczegoly|archivedate=31 July 2022|accessdate=31 July 2022|author=Tomasz Dmitruk}}</ref><ref name="Polish Ministry of Defence">{{cite web|url=https://twitter.com/MON_GOV_PL/status/1552203913276841984?s=20&t=HzYWMkZkBQ2uxH37x2hrcg|title=Czołgi K2|publisher=Polish Ministry of Defence official Twitter|date=27 July 2022|archiveurl=https://archive.today/20220729013832/https://twitter.com/MON_GOV_PL/status/1552203913276841984?s=20&t=HzYWMkZkBQ2uxH37x2hrcg|archivedate=29 July 2022|accessdate=29 July 2022|author=Ministerstwo Obrony Narodowej}}</ref><ref name="PGZ">{{cite web|url=https://www.yna.co.kr/view/AKR20220727090752504|title=폴란드 "한국에 K2 1천대·FA-50 3개편대·K-9 600문 주문"(종합2보)|publisher=Yonhap News Agency|date=27 July 2022|archiveurl=https://web.archive.org/web/20220729001831/https://www.yna.co.kr/view/AKR20220727090752504|archivedate=29 July 2022|accessdate=29 July 2022|author=Kim Yeonsuk}}</ref><ref name="Defence24">{{cite web|url=https://cdn.defence24.pl/2022/07/29/b8a347b7-2dc4-4ddb-82dc-b49174860aa2.pdf|title=Poland Procures Korean MBTs, Aircraft, and Howitzers|publisher=Defence24|date=28 July 2022|archiveurl=https://web.archive.org/web/20220729165048/https://cdn.defence24.pl/2022/07/29/b8a347b7-2dc4-4ddb-82dc-b49174860aa2.pdf|archivedate=29 July 2022|accessdate=29 July 2022|author=Maciej Szopa}}</ref><ref name="Wojsko Polskie 20221209">{{cite web|url=https://www.wojsko-polskie.pl/articles/tym-zyjemy-v/pierwsze-czolgi-k2-przekazane-zolnierzom-wojska-polskiego/|title=Pierwsze czołgi K2 przekazane żołnierzom Wojska Polskiego|publisher=Wojsko Polskie|date=9 December 2022|archiveurl=https://web.archive.org/web/20221210025147/https://www.wojsko-polskie.pl/articles/tym-zyjemy-v/pierwsze-czolgi-k2-przekazane-zolnierzom-wojska-polskiego/|archivedate=10 December 2022|accessdate=10 December 2022|author=}}</ref><ref name="zbiam 20221209">{{cite web|url=https://zbiam.pl/pierwsze-czolgi-k2-przekazane-polskim-zolnierzom/|title=Pierwsze czołgi K2 przekazane polskim żołnierzom|publisher=zbiam|date=9 December 2022|archiveurl=https://web.archive.org/web/20221210032915/https://zbiam.pl/pierwsze-czolgi-k2-przekazane-polskim-zolnierzom/|archivedate=10 December 2022|accessdate=10 December 2022|author=Bartłomiej Kucharski}}</ref>

== Variants ==
* '''[[Engineering:MKE 120 mm tank gun|MKE 120 mm tank gun]]:''' Turkish 120&nbsp;mm 55 caliber smoothbore gun modified based on CN08 for the Altay tank. The design of the tank gun is the same as CN08, but there are two differences: unlike CN08, [[Engineering:Thermal sleeve|thermal sleeve]] is equipped with Static Muzzle Reference System (SMRS), and Altay's turret does not have breech opening motor and automatic feeding magazine system for autoloader mechanism, so ammunition can only be loaded manually by tank crew and can fire up to 6 rounds a minute.

== Operators ==
[[File:CN08 operators.svg|thumb|400px|CN08 operators]]

=== Current operators ===
* {{POL}} – Polish Land Forces<ref name="Wojsko Polskie 20221209" /><ref name="zbiam 20221209" />
* {{KOR}} – Republic of Korea Army

== See also ==
* [[Engineering:MKE 120 mm tank gun|MKE 120 mm gun]]: Turkish 120&nbsp;mm 55-caliber smoothbore gun developed for the Altay MBT.

=== Weapons of comparable role, performance and era ===
* L11A5 120 mm rifled gun: British rifled equivalent, developed by Royal Armament Research and Development Establishment (RARDE) in 1957.
* [[Engineering:2A46 125 mm gun|2A46 125 mm gun]]: Russian 125-mm equivalent, developed by Spetstekhnika Design Bureau in 1960s.
* [[Engineering:Rheinmetall Rh-120|Rheinmetall 120 mm gun]]: German equivalent, developed by Rheinmetall in 1974.
* CN120-25 120 mm gun: French equivalent, developed by Établissement d'Études et de Fabrication d'Armements de Bourges (EFAB) in 1979.
* [[Engineering:MBT-80#Armament|EXP-28M1 120 mm rifled gun]]: Experimental British weapon of the late 1970s/early 1980s. Was to have equipped the MBT-80.
* CN120-26 120 mm gun: French equivalent, developed by EFAB in 1980s.
* [[Engineering:IMI 120 mm gun|IMI 120 mm gun]]: Israeli equivalent, developed by Israeli Military Industries in 1988.
* OTO Breda 120 mm gun: Italian equivalent, developed by OTO Melara in 1988.
* [[Engineering:Royal Ordnance L30|L30A1 120 mm rifled gun]]: British rifled equivalent, developed by ROF Nottingham in 1989.
* [[Engineering:Type 10#Armament|JSW 120 mm gun]]: Japanese equivalent, developed by Japan Steel Works in 2008.
* [[Engineering:T-14 Armata#Armament|2A82-1M 125 mm gun]]: New Russian 125-mm equivalent, developed by [[Company:Uralvagonzavod|Uralvagonzavod]] in 2014.

== Notes ==
{{Notelist}}
{{NoteFoot}}
{{Notelist-lr|30em}}

== References ==
{{reflist}}

== External links ==
* [https://archive.today/20231013002032/https://v.daum.net/v/59b5dd96ed94d200016b6d3b Principle of hydraulic recoil mechanism of CN08]

[[Category:Tank guns]]

{{Sourceattribution|CN08 120 mm gun}}