411 REFERENCE · Wiktionary
5.56
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
Translingual
Etymology
From 5.56 millimetres, the internal diameter, from the top of the lands in the barrel rifling. (the bullet calibre would be 5.664 mm (0.223")).
Noun
mul noun
mul firearms A common en calibre of firearm
Synonyms
mul .223
Derived terms
mul 5.56 NATO
mul 5.56x45
mul 5.56x45 NATO
Related terms
mul 7.62