The 2S34 Chosta is a Russian modernisation of the Soviet-era and still ubiquitous 2S1 Gvozdika self-propelled gun (see here). The 2S34 keep the same low-profile, dimensions and running gear than the 2S1. The main changes are the installation of a more potent 120mm 2A80 rifled gun/mortar (replacing the 122mm 2A31) with a semi-automatic loading system coupled with a new Fire Control System giving improved accuracy, better rate-of-fire and the possibility to use guided munition types. Two banks of smoke-grenades dischargers have also been added to the turret sides.
The 3D printed kit is from Red Tank Miniature and is as usual very fine. I only made a few improvements (at the level of the engine grilles and the exhausts in particular) and loaded the vehicles with a whole impedimenta, in particular thanks to the magnificent accessories and weapons from Scale23.