Here is the ubiquitous MT-LB tracked vehicle equipped with yet another weapon system: the S-60 anti-aircraft gun. The AZP S-60 (Automatic anti-aircraft gun S-60) is a soviet 57 mm, towed, short- to medium-range, single-barrel anti-aicraft gun from the mid- 1950s. Extensively used in the Warsaw Pact, Middle Eastern and Southeast Asian (notably during the Vietnam war) countries. No longer useful in its original anti-aircraft role, it has more recently been used in an indirect fire role (with a range of around 6 km) notably in the Syrian conflict and in Ukraine by both side, generally mounted on various mobile supports, trucks or as here MT-LB.
The very nice 3D printed kit is from YK3D but modified to match a Russian adaptation. The figures are from Alex Miniature. The Warhammer Ork emblem sometimes seen on some Russian vehicles is a nod to the nickname given by Ukrainians to Russian Troops.