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Made from 9310 Vac-Arc Premium Carburizing Steel which has a high core hardness and high fatigue strength unlike standard Hot/cold rolled 9310 steels
SPECS: Fits - DPMS pattern 308 rifles
- Manganese Phosphate Coated
the NiB P1W5XG coating has a polished gun metal look and WILL NOT FLAKE
- 4140 Steel Billet Machined Gas Key Nickel Boron Coated
AR15/M16 Left Handed Nitride Bolt Carrier Group 5.56/.223 6.8 Made from 9310 Vac-Arc PremiumCarrier made with 8620 Steel and bolt made from 9310 Vac Arc Premium Carburizing Steel which has a high core hardness and high fatigue strength unlike standard Hot cold rolled 9310 steels. The nitride coating is the strongest plate available, it's the same protective finish that's used in gun barrels and CNC tool protection. If you're looking for a bolt carrier that's going to hold up against the roughest conditions then this bolt carrier group is the
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