Description
M16 5.56/.223 / 300 AAC Complete Bolt and Carrier Group is chrome lined, made from 8620 steel, Bolt is made from 9310 steel and coated per mil spec. MPI Tested. The 223 Bolt and Bolt Carrier Assembly comes complete with cam pin, firing pin and firing pin retainer.
-BCG is nitride finished
-Tungsten grade extractor
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