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- Tool Steel Extractor Nitride Coated
- 9310 Steel Bolt
Carrier made with 8620 Steel and bolt made from mil-spec Carpenter 158 Steel
Nitride coating provides not only a high core strength but give the Bolt Carrier group a tough exterior coating
- 4340 Steel Cam Pin Nickel Boron Coated
7.62x39 Bolt Carrier Group Nitride QPQ 6.8 SPC - Tool Steel Extractor NitrideThis is a Nitride QPQ 7. 62x39 Bolt Carrier group fully assembled and ready to drop into your rifle. Everything on this Bolt Carrier Group is machined complete all to Mil Spec standards and hardened to USGI Specifications. 8620 Steel Carrier Nitride QPQ 9310 Arc Vac Steel 7. 62x39 Bolt Nitride QPQ Tool Steel Extractor Nitride QPQ 4140 Steel Gas Key Nitride QPQ 4340 Steel Cam Pin Nitride QPQ Gas Key is staked to Mil Spec Standards Grade 8 Hardened
