High Polish AR-15 MPI Nickel Boron 5.56 Bolt Carrier Group (BCG)
Features:
.223/5.56 NATO
Nickel boron finish
M16 cut
9310 steel carrier
Carpenter 158 steel bolt
4140 steel extractor
MIL-SPEC O-ring
MIL-SPEC gas rings
4140 steel cam pin
8740 steel firing pin with hard chrome finish
Magnetic particle inspected
High Polished Components
Proudly made in the U.S.A.
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