Fail Zero 7.62x39 BCG – Nickel Boron Bolt Carrier Group for AR-15

Engineered for Power, Built for Reliability

Unlock maximum performance from your 7.62x39 AR-15 with the Fail Zero 7.62x39 Bolt Carrier Group – a rugged, battle-proven BCG coated with FailZero's exclusive EXO Nickel Boron (NiB) finish. Whether you're building an AK-alternative AR or upgrading an existing platform, this full auto-rated 7.62x39 BCG offers unmatched smoothness, corrosion resistance, and clean operation.

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🔧 Product Highlights

• Caliber Compatibility: 7.62x39mm

• Platform: AR-15

• Coating: EXO™ Nickel Boron – self-lubricating and easy to clean

• Bolt Material: 9310 steel, MPI tested & shot peened

• Carrier: 8620 steel, full-auto profile

• Gas Key: Chrome-lined, staked, and sealed

• Includes: Bolt, carrier, gas key, cam pin, firing pin, and retaining pin

✅ Drop-in ready for most 7.62x39 AR-15 builds
✅ Built to mil-spec standards
✅ Full-auto rated for durability and strength

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💡 Why Choose Nickel Boron Over Phosphate or Nitride?

Fail Zero’s patented EXO NiB coating offers performance benefits far beyond traditional finishes:

With Nickel Boron, you spend less time cleaning and more time shooting.

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🔥 Built for Rugged Use with 7.62x39 Ammunition

7.62x39mm is a tough, dirty, and powerful round — and not every bolt carrier group can handle it. That’s why Fail Zero’s EXO-coated 7.62x39 BCG is engineered to:

• Reduce jamming and stuck casings

• Cycle smoothly even with steel case ammo

• Resist corrosion from dirty powder and harsh environments

It’s the perfect match for hunting, tactical setups, or SHTF rifles.

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🎯 Compatible AR-15 Builds

This BCG fits standard AR-15 platforms chambered in 7.62x39mm and works with:

• PSA 7.62x39 Uppers

• Radical Firearms AR-47

• CMMG Mutant (with standard AR-style bolt)

• DIY Grendel/AK hybrid builds

⚠️ Not for use with AK-47 rifles or non-AR platforms.

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⭐ Customer Feedback

“I’ve used this BCG in my 7.62x39 AR for over 1,500 rounds with zero failures. Smooth cycling and minimal fouling – exactly what you want with steel case ammo.” – Verified Buyer

“The EXO coating is a game-changer. Cleans up with a single wipe and runs cool.” – TacticalARFan

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🛒 Why Buy From Mounts Plus?

• 🔒 Secure checkout and fast shipping

• 💥 Veteran-owned, firearm-focused experts

• 📞 US-based customer support

Order with confidence and power up your AR build with battle-grade components.

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❓ Frequently Asked Questions

Q: Will this BCG handle steel case ammo?
Yes – the EXO NiB coating minimizes friction and fouling, making it ideal for steel case 7.62x39.

Q: Is it compatible with Type I or Type II bolts?
This BCG is configured for standard 7.62x39 AR-15 platforms using Type I bolts.

Q: Is this full auto rated?
Yes. The carrier is machined to full-auto specs for enhanced durability and smooth cycling.

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✅ Order the Fail Zero 7.62x39 BCG Today

Looking for the best bolt carrier group for a 7.62x39 AR15? You just found it. The Fail Zero EXO-coated BCG is your drop-in solution for clean shooting, rugged performance, and long-term reliability.