AR-10 / LR-308 Bolts & Carriers

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The AR-10 bolt carrier group is one of the most important parts of any rifle. Whether you have an AR-10 from Armalite or a nearly identical LR-308 that relies on a .308 bolt carrier group, choosing the right bolt carrier group for a rifle is essential. A bolt carrier group is used to eject spent casings from the chamber of an AR-10 or LR-308. It also recocks the hammer on a rifle and moves a new cartridge from a magazine into a rifle’s chamber.

Bolt carrier group parts on a wood background

Choose the Right Bolt Carrier Group

Every AR-10 and LR-308 has a bolt carrier group that is part of its upper receiver. However, you will need to look into a bolt carrier group that is specifically designed for your specific firearm. LR-308s, in particular, can present compatibility problems if you aren’t using the right bolt carrier groups.

 F-1 Firearms DuraBolt AR-10 Bolt Carrier Group

AR-10 Bolt Carrier Group

A bolt carrier group like the F-1 Firearms DuraBolt AR-10 Bolt Carrier Group, is specifically designed for .308 Win, 7.62 NATO, and 6.5 Creedmoor. There are multiple finishes available so you can choose the one that best completes the look of your rifle.

 Faxon Firearms .308 Bolt Carrier Group

.308 Bolt Carrier Group

A bolt carrier group, such as the Faxon Firearms .308 Bolt Carrier Group, operates in much the same way an AR-10 bolt carrier group does. But this BCG won’t be compatible with all AR-10s and LR-308s. It can be used with DPMS Gen I pattern LR308 rifles but not DPMS Gen 2 pattern LR308 rifles.

Wing Tactical: High-Quality Bolt Carrier Groups

Wing Tactical is a leading provider of bolt carrier groups and other handgun and rifle components and accessories. We routinely provide these products to first responders, active duty military personnel, competitive shooters, and civilian gun enthusiasts.

We’re a veteran-founded company that comprehends the importance of helping gun owners obtain reliable parts. We thoroughly test every item we sell to ensure it meets our high standards before offering it to our customers.

If you need to buy a new AR-10 bolt carrier group or if you’re interested in putting together a build that uses a .308 bolt carrier group, our experienced gunsmiths would be happy to help you choose one. Contact us today to learn more about your BCG options.

Frequently Asked Questions

How does an AR-10 bolt carrier group and a .308 bolt carrier group work?

Although AR-10s and LR-308s might have different names, their bolt carrier groups perform the same tasks. These rifles have direct impingement gas systems in them that expel gas after they’re fired that makes its way to a bolt carrier group’s gas key. From there, the bolt in the BCG will unlock and move back, which will lead to the spent casing that remains in the rifle’s chamber being ejected from the firearm. The BCG also plays a key role in helping to recock an AR-10 or LR-308 as it moves forward again, and it’ll even help put a fresh cartridge from a rifle’s magazine into its chamber.

Do AR-10 and AR-15 bolt carrier groups have the same parts in them?

The same parts can be found in an AR-10 bolt carrier group and an AR-15 bolt carrier group, but the ones in the .308 BCG are slightly bigger to accommodate the larger .308 Winchester caliber. All BCGs have bolts and bolt carriers, along with firing pins, ejectors, extractors, and gas keys.

Will all AR-10 and .308 bolt carrier groups fit in all AR-10s and LR-308s?

Most AR-10 bolt carrier groups will fit in most AR-10 rifles, and most .308 bolt carrier groups will fit in most LR-308s. However, some bolt carrier groups won’t be compatible with the AR-10s or LR-308s they’re purchased for. You’ll need to select the right BCG based on the type of rifle you own.

Which brands make the best AR-10 and .308 bolt carrier groups?

There are so many brands that have earned reputations for producing the best AR-10 and .308 bolt carrier groups in the business. Wing Tactical sells BCGs from many of these brands, including Aero Precision, Rubber City Armory, Spike’s Tactical, WMD Guns, and more.