https://www.planetminecraft.com/project/1-5-1-scale-2a19-zu-23-2/


The ZU-23-2, also known as ZU-23, is a Soviet towed 23×152 mm anti-aircraft twin-barreled autocannon. ZU stands for Zenitnaya Ustanovka (Russian: Зенитная Установка) – anti-aircraft mount. The GRAU index is 2A13

The ZU-23-2 was developed in the late 1950s. It was designed to engage low-flying targets at a range of 2.5 km as well as armoured vehicles at a range of two kilometres and for direct defence of troops and strategic locations against air assault usually conducted by helicopters and low-flying airplanes.^[7] In 1955, KBP presented the single-barrel ZU-1 and the twin-barrel ZU-14. While the former was eventually dropped, the ZU-14 was selected and, after some modifications, entered series production.

In the Soviet Union, some 140,000 units were produced. The ZU-23 has also been produced under licence by Bulgaria,^[8] Poland, Egypt^[9] and the People's Republic of China.^[10]

Development of this weapon into a self-propelled anti-aircraft gun led to the ZSU-23-4 Shilka.

taken from wikipedia,
https://en.wikipedia.org/wiki/ZU-23-2