5.8×42mm
5.8×42mm is an intermediate cartridge or ammunition model.
Also recorded as 5.8 × 42mm; 5.8×42mm DBP87.
Overview
Intermediate rifle cartridge of China.
In detail
It is associated with People's Republic of China.
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
“5.8×42mm”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q2667492: 5.8×42mm
Consult the source