AR-15
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An assault rifle, originally developed in the 1950s and similar to the M-16, but lighter and able to use a number of different ammunition clips and modifying devices.
See the Introduction, Abbreviations and Pronunciation for further details.
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Oxford Dictionary of the US Military
The Oxford Essential Dictionary of the U.S. Military. Copyright © 2001, 2002 by Oxford University Press, Inc. All rights reserved.
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