5.56

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

5.56

  1. (firearms) A common calibre of firearm

Synonyms

Derived terms
  • 5.56 NATO
  • 5.56x45
  • 5.56x45 NATO
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