Z (29) 2S6 Tunguska (Russia)

A low-level air-defence system, the 2S6 Tunguska was developed by the Soviet Union to replace the ZSU-23-4 Shilka self-propelled anti-aircraft gun and the 9K31 Strela mobile surface-to-air systems. It entered service with the Soviet Army in 1982. The Tunguska is armed with twin 30mm guns and four 9M331 short-range surface-to-air missiles with a range of 8km (10km for the newest 9M311-M1 version) on each side of its turret. It has a target acquisition radar, mounted at the rear of the turret, and a tracking radar mounted at the turret front. The Tunguska has a crew of four. 

The 3D model is from an unnamed Chinese Cie. Despite a slightly "raw" printing style lacking finesse and certain details, with a few touch-ups and the addition of some accessories (mostly from Scale23), the result is rather convincing.

ZSU 23-4 Shilka AA Gun (East Germany)

The lightly armored Soviet self-propelled, radar guided anti-aircraft weapon system ZSU 23-4 Shilka entered service in the Soviet arsenal at the end of the 1960s. Armed with four 23 mm autocannons the Shilka was at the time a highly effective combination of mobility with heavy firepower and considerable accuracy.

The Nationale Volksarmee (NVA) of the German Democratic Republic acquired 131 of them between 1968 and 1978.

My East German Shilka is a repainted diecast from Fabbri. A little bit crude but it does the job. (made 2015)