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Posted: 4/25/2013 8:05:49 AM EDT
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Anyone know if these BCG's are any good?
http://blackmagicrifles.com/?page_id=43 |
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From looking at the stats on their web page.
The bcg's. they offer seem to be low grade. Info below. 5.56 Bolt Carrier Group. Mil-Spec MPI tested, 8620 bolt, D2 tool steel extractor, 8620 cam pin, 4130 carrier, 416 stainless firing pin, grade 8 gas key bolts, nano ceramic lined gas key and carrier. $125.00 |
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About "Mil-Spec".
But don't go for lesser materials like this one. |
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