AR15/M16 - 5.56 / 9310 Bolt Carrier Group Nitride QPQ
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AR15/M16 - 5.56 / 9310 Bolt Carrier Group Nitride QPQ

$69.95
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Carrier 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 one for you.   - AR15 and M16 Compatible - 5.56 / 223 - 8620 Steel Carrier Nitride Coated- 9310 Vac-Arc Steel Bolt Nitride Coated- 4340 Steel Cam Pin Nitride Coated- 4140 Steel Gas Key Nitride Coated- Tool Steel Extractor Nitride Coated- Shot Peened- MPI (Magnetic Particle Inspected)- HPT (High Pressure Tested)- Gas key staked to Mil-Spec Standards- Grade 8 Hardened Fasteners- Extractor Insert with upgraded Crane O-Ring- Power Spring Kit - Bolt engraved with MPI/9310

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