M2 Browning
M2 Browning is a 12.7 mm machine gun or heavy machine gun.
Also recorded as Browning .50 Caliber Machine Gun; BMG; M2 Machine Gun; Browning M2; 12.7 mm machine gun M2; Colt-Browning M2.
In detail
It is associated with United States. The record gives 1918 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
“M2 Browning”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q218932: M2 Browning
Consult the source