Full-mass AR-10/DPMS bolt carrier group rated for .308, 6.5 Creedmoor, and 8.6 Blackout. 8.6 uses the standard .308 bolt face, so this is the bolt for an 8.6 build, no dedicated bolt required.

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Faxon Firearms 308/6.5 Creedmoor 9310 Complete Bolt Carrier Group, Black Nitride - FF308BCGCNITRIDE-02
The Faxon Gen2 .308 BCG is the bolt carrier group for a documented Faxon 8.6 Blackout build. Unlike .338 ARC standard-lower hosts that use maker-specified Grendel-family bolts or BCGs, 8.6 Blackout uses the .308-family case head. Faxon explicitly rates this BCG for .308 Winchester, 6.5 Creedmoor, and 8.6 Blackout.
The bolt is machined from 9310 steel, the standard for AR bolts, and is high-pressure tested and magnetic-particle inspected to catch flaws before they become failures. The full-mass carrier and salt bath nitride finish give it the durability and easy cleaning that suppressed subsonic shooting demands, where carbon and unburned powder build up faster than with supersonic loads.
For a builder assembling an 8.6 AR-10 around a Faxon or Ballistic Advantage barrel, this is the drop-in fire-control half of the upper. Pair it with a large-frame upper receiver, the matching barrel, a gas system sized to barrel length, and SR-25 pattern magazines.
Add the Faxon .308 / 6.5 CM / 8.6 Blackout Gen2 Nitride BCG to your build and see how it enhances your platform.