Meaning of M-16

M-16

Pronunciation: (em'siks"tēn'), [key]
— pl. M-16s.
  1. a lightweight, fully automatic rifle shooting a small-caliber bullet at an extremely high velocity: a U.S. Army combat weapon for mobile units and jungle fighting.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.