2S1 Gvozdika

• 2S34 Hosta – Modernisation of the 2S1 with the 122 mm 2A31 gun replaced by the 120 mm 2A80-1 gun-mortar. Further improvements include a new Malakhit fire control system, a battlefield observation system and the ability to fire the Kitolov-2M guided ammunition. One unit, the 21st Mechanized Brigade in Totskoye is currently being equipped with the system.
• 2S15 Norov – A prototype tank destroyer equipped with a radar-based fire control system and a 100 mm gun.[3]

• Kevlar-E – Infantry fighting vehicle based on the 2S1 platform, equipped with Shturm remote weapon station and room for 6 passengers in addition to the 3 crew. The original 300 horsepower V8 diesel engine has been replaced with 420 horsepower diesel engine, produced by Caterpillar, Cummins or Deutz, increasing the maximum road speed to 70 km/h. Additionally, the vehicle is amphibious, includes air conditioning, a fire detection and suppression system, an NBC system, navigation system and night-vision equipment. The variant was first introduced in April 2018.[4]

The 2S1 Gvozdika (as well as other related vehicles such as the MT-LB and Opal) were produced in Poland by Huta Stalowa Wola under the name 2S1 Goździk.

• 2S1M Goździk – Version with special amphibious kit that increases the vehicle's amphibious capabilities.
• 2S1T Goździk – Version with a TOPAZ digital fire control system from WB electronics. The system consists of a FONET-IP digital intercom system, new digital radio, military GPS receiver, military computer and dedicated software. The same system is used on other Polish Armed Forces artillery systems like the AHS Krab, Dana-T and WR-40 Langusta.

• OAPR model 89 (Obuzierul autopropulsat românesc, model 89) – Romanian variant combining the 2S1 Gvozdika's turret and a modified version of the MLI-84's chassis. Designed around 1978, produced between 1987-92. Also simply known as Model 89.[5][6]

• Raad-1 ('thunder') – Iranian variant that is based on the hull of the Boragh APC.

• 2S1U – In March 2019, a Ukrainian company and the Myanmar military have signed a joint-venture agreement to build a plant capable of manufacturing armored personnel carriers (APCs) and self-propelled howitzers. The types of APCs that will be made in the plant are said to be eight-wheeled BTR-4Us while the howitzers will be 2S1Us, which are based on the MT-LBu multipurpose chassis.[7][8]

•  Algeria – 145
•  Angola
•  Armenia – 20
•  Azerbaijan – 81 2S1 and unknown number of UR-77
•  Bosnia and Herzegovina – 5
•  Belarus – 246[9]
•  Bulgaria – 506. In 2013 delivered 11 SPG from Poland[10]
•  Chad - 10[11]
•  Cuba
•  Croatia – 9 (to be used alongside 15 Panzerhaubitze 2000 from German Army stock)
•  Eritrea – 20[12]
•  Ethiopia
•  Finland – 72 (known as 122 PsH 74). In 2013 three delivered from Poland.[13]
•  Georgia 48
•  India – 110 (to be replaced)
•  Iran
•  Iraq
•  Kazakhstan – 10
•  Libya
•  Moldova
•  Poland – 324 (to be replaced by SMK Rak and AHS Krab)
•  Russia – 622[14]
•  Serbia – 72
•  Slovakia – 49
•  South Ossetia
•  Syria – 400
•  Transnistria
•  Turkmenistan – unknown number in service as of 2016[15]
•  Ukraine – 638.[16] In June 2018 33 2S1 delivered from Poland and July 2019 16 delivered from Czech Republic.[17]
•  Uruguay – 6 delivered in 1998 from Czech Republic[18]
•  Uzbekistan
•  Vietnam
•  Yemen

•  Czech Republic – Phased out in the early 2000s.
•  Czechoslovakia – Passed on to successor states.
•  East Germany – Phased out in 1990 after German reunification.
•  Hungary – Phased out in 2004. Original there were 144 pieces of Gvozdikas.
•  Islamic State – Reportedly; currently probably all destroyed.
•  Romania – 48 reserve status since 2005 (42 OAPR 89s and 6 2S1 Gvozdikas).
•  Slovenia – 8 reserve status.
•  Soviet Union – Passed on to successor states.
•  Yugoslavia – Passed on to successor states.[19]