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Meaning of M-14

M-14

Pronunciation: (em'fôr"tēn', -fōr"-), [key]
— pl. M-14's.
  1. a fully automatic, gas-operated, .30 caliber rifle developed from the M-1: replaced the M-1 as the standard U.S. Army combat rifle.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.