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Old 04-15-2010, 11:28   #2
Constructor
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Join Date: Dec 2009
Location: Roaming
Posts: 528
I do not know who machines BCMs uppers or lowers and as far as I know there is no compatability chart.
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AR15Performance
Hi perf barrels and bolts
8 twist, 5R, Melonite, Wylde chamber
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