Model Variants (Including Prototypes)
2S19 MSTA-S - Base Series Designation
2S19M1 - Improved 2S19; automatic gun laying system; appearing in 2000.
2S19M1-155 - Export Variant; fitting 155mm L/52 series main gun; appearing in 2006.
152mm Howtizer 2A65 - Towed howitzer gun form.
1K17 "Szhatie" - Special mission laser-equipped vehicle (sans turret) for reducing effectiveness of opto-electronic systems.
2S27 "MSTA-K" - 8x8 wheeled prototype form.
2S30 "Iset" - Prototype model with improvements.
2S35 2x152mm - Prototype twin-barreled 152mm-armed vehicle relying on 2S19 chassis and revised turret structure; development abandoned.