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DSG's AR15 complete bolt carrier group (BCG) M16 profile includes an MPI magnetic particle inspected bolt machined from 9310 steel. Each Bolt includes a factory-installed extra power extractor spring and a black insert.
Carriers are manufactured from 8620 steel and gas keys are properly staked. Each Bolt Carrier Group is black nitride coated for a smooth and extremely hard finish. DSG marked and visible via the open ejection port.
As used on DSG complete uppers.