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Rosco Manufacturing Bolt Carrier Group – Black
Rosco Manufacturing Bolt Carrier Group556NATO/300 BlackoutFits AR-15Phosphate and Chrome lined FinishBlackFeatures:Carrier Material: 8620 SteelGas Key: 4130 Steel, attached with Grade 8 hardware, properly stakedCam Pin: Hardened 4340 SteelFiring Pin: 8740…