AR15

noun \ˈāˈär(ˈ)fif¦tēn\
variants: or

AR15 rifle

Definition of AR15

plural

-s

  1. :  a . 223 caliber gas-operated semiautomatic rifle that is essentially a civilian version of the M16

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Origin and Etymology of ar15

from Armalite, the manufacturer


First Known Use: 1963


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