6mm ARC Bolt Carrier Groups for AR-15
6mm ARC shares the same case head dimensions with 6.5 Grendel, allowing the same bolt carrier to be used for either caliber. These BCGs are high-quality and will work in your new precision rifle build. READ MORE
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AT3™
AT3™ AR-15 Bolt Carrier Group – 6.5 Grendel Type II – Black Nitride
Complete your hard-hitting 6.5 Grendel or 6mm ARC upper with a Black Nitride Bolt Carrier Group Our new 6.5 Grendel Bolt Carrier Group features a black salt bath nitride finish,... -
CMMG 6.5 Grendel/6mm ARC Bolt Carrier Group for AR-15
CMMG 6.5 Grendel/6mm ARC Bolt Carrier Group This bolt carrier group from CMMG runs, whether your gun is set up for 6.5 Grendel or 6mm ARC. These cartridges are slightly different,... -
Battle Arms Development Titanium AR-15 Bolt Carrier Group
Full Auto Titanium AR-15 Bolt Carrier Group Lighten your AR15 with a Titanium Bolt Carrier with ArmorTI coating, providing properties never seen before. A smooth machined surface with the coating... -
AT3™
AT3™ AR-15 Bolt Carrier Group – 6.5 Grendel Type II – Nickel Boron
Run Your 6.5 Grendel or 6mm ARC Upper Right with a NiB BCG It's important to have a bolt carrier group that has everything you need. MPI inspected bolt, properly...
6mm ARC shares the same case head dimensions with 6.5 Grendel, allowing the same bolt carrier to be used for either caliber. These BCGs are high-quality and will work in your new precision rifle build.
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