Kundağı Motorlu Topçu = Self-propelled Artillery (SpA)
Kundağı Motorlu Obüs = Self-propelled Howitzer (SpH)
Firtina = Tempest (most often loosely translated as storm, but a Tempest is an English word for a particularly violent storm, which artillery bombardments certainly are)
Turkey’s T-155 Firtina (Tempest) is a co-development with Republic of Korea’s (South Korea) K9 Thunder. The turret of the T-155 looks more like that of the Panzerhaubitze, than the K9. In 2012, an Israeli news outlet reported that the US$1-billion Kundağı Motorlu Topçu deal, between Turkey and South Korea, allowed Turkey to modify the K9 as it saw fit, which included systems designed by Germany.
T-155 Firtina (not the upgraded version, identified by the .50-cal mount on the TC position) on Polatlı Training Area, Turkey, 09SEP2021.
U.S. Army video by Staff Sergeant Christopher Stewart, Firtina maneuvers on Polatlı Training Area, about 16SEP2021:
An upgraded Firtina II was delivered in January 2021. The main identifier of the Firtina-2 is the ASELSAN (“a Turkish Armed Forces company”) designed remote controlled .50 caliber heavy machine gun (Remote Controlled Weapon Station, RCWS), mounted on the top-left rear of the turret, the manually operated .50-cal was mounted on the Tank Commander’s position.
Also, note the large vent on the front left of the turret, to keep all those new electronics cool.
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T-155 in the town of Binnish in Syria’s northwestern province of Idlib, 12FEB2020. Photo by Omar Haj Kadour, Agence France-Presse.
The T-155 has its ammunition delivered by the POYRAZ Ammunition Resupply Vehicle.
This 2018 Türk Silahlı Kuvvetleri (Turkish Armed Forces) promotional video has scenes of T-155:
2017 Türk Silahlı Kuvvetleri video mainly of the T-155:
In 2016, Turkish taxpayer owned MKEK (Makina ve Kimya Endüstrisi Kurumu, Mechanical and Chemical Industry Corporation) patented two new systems for controlling and loading of the main gun.
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T-155 destroyed by Kurdish-YPG Russian made Konkurs anti-tank missile, somewhere in Syria. However, Islamic State has also been taking credit for destroying Turkish tanks inside Syria.
This 2015 Türk Silahlı Kuvvetleri promo-video has scenes of T-155, about 41 seconds in:
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