ZU-23-2
ZU-23-2 is an anti-aircraft gun or artillery model.
Also recorded as SU-23; 23mm ZU-23.
Overview
Towed 23 mm anti-aircraft twin autocannon.
In detail
It is associated with Soviet Union. The record gives 1960 as its date of establishment or first appearance.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“ZU-23-2”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q697521: ZU-23-2
Consult the source