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7.62 upper on ar 15 lower?

southfork

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#1
Ive read where it can be done, anyone try it,some said they used 556. Mag too
 

SilverCity

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#2
Yes. Example: Colt over RRA. The 556 mag will work but only with 5 or 6 rounds reliably. 16 or 20.

Colt 7.62x39.jpg


SC
 

the_shootist

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<SLV>

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#5
.300 AAC (Blackout)