vz. 54 rifle
vz. 54 rifle is a sniper rifle or firearm model.
Also recorded as vz. 54 Sniper; vz. 54.
In detail
It is associated with Czechoslovakia.
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
“Vz. 54”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q25382870: vz. 54 rifle
Consult the source