Well the M part means military. XM means experimental.
the 16 in M16 means that it was the 16th model that was adapted for the military. Armalite made 15 models before the military adapted a 16th model that was militarized.
Right, but the M4 (carbine) wasn't the fourth rifle adopted by the military.
01-09-2010, 06:08 PM
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