Faxon Firearms .308 9310 Bolt Complete - Nitride Black Nitride LR-308/SR-25. 308 9310 Bolt Complete - Nitride. These Bolt Carrier Groups developed by the experts at Faxon Firearms are crafted from tough 9310 tool steel and finished with a Salt Bath Nitride for superior corrosion resistance in comparison to chrome or phosphate Bolt Carrier Group BCG. The Faxon Firearms .308 Nitrided AR-10 Bolt features 45-degree chamfered lugs for enhanced reliability with every shot. Upgrade your weapon with this Faxon Firearms .308/6.5 Creedmoor AR10 Bolt for extra confidence in the field knowing your firearm will always cycle properly. Specifications for Faxon Firearms .308 9310 Bolt Complete: Manufacturer: Faxon Firearms Color: Black Nitride Caliber: 7mm-08 Remington Gun Model: DPMS LR-308 AR-10 Gun Type: Rifle Hand: Ambidextrous Features of Faxon Firearms .308 9310 Bolt Complete - Nitride: Bolt: 9310 Tool Steel Construction Full MIL-SPEC Heat Treatment Shot Peened to MIL-SPEC Magnetic Particle Inspection (MPI) Back of Lugs Chamfered for Reliability .308 Spec Springs & Dual O-Ring Installed Salt Bath Nitrided DPMS Gen 1 compatible Extractor: S7 Tool Steel Construction Fully Heat Treated Shot Peened Per MIL-SPEC Package Contents: Faxon Firearms .308 9310 Bolt Complete - Nitride What firearm models does the manufacturer say Faxon Firearms .308 9310 Bolt Complete is compatible with? The manufacturer suggests that Faxon Firearms .308 9310 Bolt Complete is compatible with AR-10 DPMS LR-308Faxon Firearms FF308BCNITRIDE: .308 9310 Bolt Complete - Nitride Black Nitride LR-308/SR-25