AB ARMS BOLT CARRIER GROUP – 5.56MM AR-15 NICKEL BORON

The AB Arms bolt carrier group in nickel boron finish delivers reliable performance for your 5.56mm AR-15 platform. Whether you're building in Fairfield or anywhere across California, understanding your local regulations matters. Check out our guide to California firearm laws before you start your build or upgrade project.

Nickel Boron Carrier Durability

Nickel boron coating reduces friction and fouling compared to standard mil-spec carriers, extending the service life of your bolt carrier group. The smooth finish minimizes carbon buildup during extended shooting sessions. This AB Arms carrier handles 5.56mm loads reliably across various gas system configurations. When you're ready to complete your purchase, review our FFL transfer pricing so you know what to expect at checkout. Visit our gun store in Sunnyvale for our full catalog.

Frequently asked questions

Does the nickel boron finish require special cleaning?

No, nickel boron is harder and more corrosion-resistant than standard finishes. Standard gun cleaner and light oil work fine. The coating naturally sheds carbon buildup more easily than bare steel.

Will this carrier work in my existing upper receiver?

Yes, this is a standard 5.56mm AR-15 bolt carrier group. It's compatible with any mil-spec upper receiver and lower receiver assembly designed for 5.56mm ammunition.

What do I need to bring for DROS in California?

Bring a valid California driver's license or ID card, proof of residency, your Firearm Safety Certificate (FSC), and payment for the firearm and transfer fees. Looking for FFL dealer Gilroy? Visit us in Sunnyvale.