Quote:
Originally Posted by AaronM
The most common AR-15 caliber is 5.56 but it is offered in several additional calibers.
Among those missing:
.223
7.62x39
.204 Ruger
6.8SPC
.50 Beowulf
300 AAC Blackout
9mm
Etc...
The M60 is 7.62x51 (.308) while the AR-15 is available in 7.62x39.
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Isn't 5.56 the exact same as .223