Faxon Firearms 5.56 NATO AR-15 Bolt Carrier Group - Nitride

Manufactured by Faxon Firearms
Manufactured by Faxon Firearms
7 Reviews

In Stock

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Faxon Machining engineers and manufactures components that are found everywhere. In theaters of combat, on the ocean floor, in cars, in aircraft, on the ISS, and on Mars. Now, they bring their engineering excellence to bear on providing new and innovative components for the AR-15 platform that set the standard for quality. Faxon Firearms, manufacturing strategic solutions for tactical problems.

With virtually all components coated in a slick, highly corrosion resistant salt bath nitride finish, this AR-15 bolt carrier group is crafted for a long service life. The M16 cut, superfinished carrier offers greater durability and features a properly staked gas key fastened with grade 8 hardware and Permatex sealed. The 9310 tool steel bolt has been shot peened per MIL-SPEC and magnetic particle inspected. The locking lugs are chamfered for more reliable operation.

  • All major components salt bath nitrided
  • Superfinished 8620 steel carrier
  • Forward assist serrations
  • M16 cut
  • Properly staked 4140 steel key with grade 8 fasteners
  • Permatex sealed
  • Shot peened 9310 tool steel bolt
  • Magnetic particle inspected
  • Chamfered lugs
  • Crane O-ring installed
  • Shot peened S7 tool steel extractor
  • 4140 pre-hardened steel cam pin
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Bolt FinishSalt Bath Nitride
Bolt Material9310 Steel
BrandFaxon Firearms
Caliber Gauge5.56 NATO
Carrier FinishSalt Bath Nitride
Carrier Material8620 Carpenter Steel
Carrier StyleM16 Bolt Carrier
High Pressure TestedUntested
Magnetic Particle InspectMagnetic Particle Inspected
Weight11.4 Oz
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

7 reviews


Great but has a flaw. May be just mine.

by -

Very nice finish. Great looking bcg. Haven’t shot it yet. However.... The cotter pin that holds the firing pin in pertruds out of the hole and doesn’t allow the bcg to fit inside the upper. You can force it in but it’ll rub threw the upper. Disappointed.... so besure to check yours if you buy.

faxon bcg

by -

very nice finish, haven't shot it yet but but no issues so far.

Nice Product

by -

Finish is exceptional. Works flawlessly and was priced very good.

We are happy to bring you great products at very good prices.

Too Many Issues

by -

This Faxon BCG had some serious issues:
1. Gas key was misaligned
2. Approximately 0.009” clearance between bolt tail and carrier. Way too much.
3. Very rough finish inside carrier in gas ring area.

The BCG would usually extract and eject the first round but never pick up the second round. Swapped BCG into other gun and that AR had the same problems. I return the Faxon BCG and bought a Microbest. The rifle runs fine now.

Primary Arms customer service was great.

faxon bolt

by -

excellent bolt carrier

What Staking?

by -

Almost nonexistent gas key staking. Just a tiny dimple to the point it looks entirely superficial and not actually a functioning stake. Returning this and buying a different brand.

Poor QC

by -

Seemed to have lathe marks all over the bolt carrier. Staking was nearly non-existent on the gas key. The firing pin hole was strangely large with lots of wiggle compared to other 556 bolts I have. I returned it for a refund and bought a different brand from Primary Arms. 5 star review for PA's return policy.