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Phase 5 Weapon Systems Inc AR15 Bolt Carrier Group (BCG), Nickel Boron Coating BCG-AR15 NiBX

Phase 5 Weapon Systems Inc AR15 Bolt Carrier Group BCG, Nickel Boron Coating, Nickel Boron, Medium, BCG-AR15 NiBX
Phase 5 Weapon Systems Inc AR15 Bolt Carrier Group BCG, Nickel Boron Coating, Nickel Boron, Medium, BCG-AR15 NiBX
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Phase 5 Weapon Systems Inc AR15 Bolt Carrier Group BCG, Nickel Boron Coating, Nickel Boron, Medium, BCG-AR15 NiBX

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Questions & Answers
Full auto rated?

negative ghost rider

by Auddie, Verified Owner, June 13, 2021
See 1 More Answer
Is this a 5.56 bolt carrier? Expert Answer

Yes, this BCG will work with the following calibers.

5.56 NATO / .223 Rem / 300 BLK

by Kurt Colbourne, Gear Expert, October 4, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
The Best BCG I have ever used. by ncofishing, November 9, 2020
I have had this BCG for 6 years and it runs flawlessly with ZERO issues. It cleans up well with just a rag. I have only used it in 556/223 but I'm sure it run would other calibers just fine with the proper bolt.
1/1 found this helpful
Helpful Positive Review
Great BCG for the price by Wayne Mirka, Verified Owner, August 13, 2020
I was looking for a mil spec bcg that was nickel boron coated and found this one for a great price. The coating really helps keeping it clean. I am running it in two of my builds and haven’t had an issue with them yet. Exactly what I was looking for.
1/1 found this helpful
Read All 2 Reviews

Product Temporarily Unavailable

Phase 5 Weapon Systems Inc AR15 Bolt Carrier Group (BCG), Nickel Boron Coating is currently unavailable. We are working with our suppliers to secure additional supply as quickly as possible. If you are looking for a comparable replacement you can receive sooner, please consider the suggestions from our product experts belowor explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Parts, Bolt Carrier Groups.

Product Info for Phase 5 Weapon Systems Inc AR15 Bolt Carrier Group (BCG), Nickel Boron Coating

The Nickel Boron coated Bolt Carrier Group BCG enhances reliability, lessens cleaning time, improves corrosion resistance and minimizes required bolt lubrication. Nickel Boron coated bolt carrier, heat treated hardened. Hardened gas key, grade 8 hardened fasteners. Cleaning is minimal, usually requiring only a soft cloth. Permits firing for longer periods of time between cleaning, as dirt and powder residue has no wet or oily surface to cling to.image

Features of Phase 5 Weapon Systems Inc AR15 Bolt Carrier Group BCG, Nickel Boron Coating

  • The complete Bolt Carrier Group BCG includes cam pin, firing pin, gas key, and bolt. All bolts are HPT/MPI tested.

Package Contents:

  • Phase 5 Weapon Systems Inc AR15 Bolt Carrier Group, Nickel Boron Coating

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Phase 5 Weapon Systems Inc AR15 Bolt Carrier Group (BCG), Nickel Boron Coating Unavailable & Discontinued Models

List of Unorderable Models

  • Phase 5 Weapon Systems Inc AR15 Bolt Carrier Group BCG, Nickel Boron Coating, Nickel Boron, Medium, BCG-AR15 NiBX , MPN: BCG-AR15 NiBX , UPC: 813318022806 , Code: 1U8-BCG-PH5WS7-BCG-AR15-NIBX
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Last updated 2026-09-05 UTC.