M-14

[em-fawr-teen, -fohr-]
noun, plural 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.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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