Originally posted by Magnus
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7.62x39 AR Upper, best for $400 or under? (or damn close)
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Like I said before, 7.62x39 feeds just fine from a standard AR lower IF you use the straight 10 round mags. The 25 round mags suck.
I have both 7.62x39 and 6.5 grendel uppers (same parent cartridge) and they both feed just fine on my lower.
Biggest thing you need is an adjustable gas block. Commie ammo is all over the map in regards to powder charge.
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