KAK AR15 BCG – 5.56 / 300 Blackout, NP3
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MFG#: 425-0506-001

The KAK Industry AR15 Bolt Carrier Group (BCG) is designed for maximum reliability and smooth performance across both 5.56 NATO and 300 Blackout AR-15 rifles. Coated in NP3, it combines low-friction operation, superior corrosion resistance, and a chrome lined interior for long-lasting durability. Whether you’re shooting suppressed or unsuppressed, this BCG is engineered to cycle cleanly, resist fouling, and deliver Mil-Spec dependability every time.

Key Features

• Caliber Compatibility – Works with both 5.56 NATO and 300 Blackout AR15 builds

• NP3 Coating – Electroless nickel with fluoropolymer for reduced friction, corrosion protection, and easier cleaning

• Chrome Lined Interior – Provides slick cycling, extended wear life, and smooth operation under heavy use

• Full Auto Profile – Machined to M16 specifications for extra strength and long-term reliability

• Premium Materials – Carrier (8620 steel), Bolt (9310 steel, MPI tested), Firing Pin (8740 steel, chrome plated), Extractor (4140 steel)

• Mil-Spec Quality – Heat treated, shot peened, and tested to military standards

• Made by KAK Industry – Precision machined in the USA for fit and performance you can trust

Why Choose NP3 Coating?

The NP3 finish is one of the most advanced coatings available for AR15 BCGs. Its benefits include:

• Reduced friction for smoother cycling and less wear on moving parts

• Corrosion resistance that outperforms phosphate and nitride finishes

• Easy cleaning, with fouling wiping away after long shooting sessions

• Extended service life in both suppressed and unsuppressed rifles

If you’re looking for a low-maintenance carrier group that stays reliable in demanding conditions, NP3 is a proven choice.

Suppressed Rifle Performance

Running suppressed increases fouling, heat, and gas blowback. The NP3 coating helps resist buildup and keeps the BCG cycling smoothly, even after extended suppressed fire. Combined with a chrome lined interior, this BCG is one of the most suppressor-friendly options on the market.

FAQ – AR15 BCG 5.56 / 300 Blackout NP3

Q: What calibers is this AR15 BCG compatible with?
A: It is designed for 5.56 NATO and 300 Blackout AR-15 rifles, ensuring versatility across both calibers.

Q: What makes NP3 better than phosphate or nitride?
A: NP3 offers lower friction and superior corrosion resistance, while phosphate is rugged and nitride is harder. NP3 is the best for smooth cycling and easy cleaning.

Q: Is this AR15 BCG full auto rated?
A: Yes. It’s machined to the M16 full auto profile for added strength and Mil-Spec reliability.

Q: Is the bolt MPI tested?
A: Yes. The 9310 steel bolt is MPI tested to ensure strength and durability under high round counts.

Q: Does this BCG work well in suppressed rifles?
A: Absolutely. The NP3 coating resists fouling, making it especially effective in suppressed setups where carbon buildup is heavier.

Q: Who manufactures this BCG?
A: It’s made in the USA by KAK Industry, a trusted name in Mil-Spec and enhanced AR15 components.

Final Thoughts

The KAK Industry AR15 BCG – 5.56 / 300 Blackout, NP3 is built for shooters who value smooth cycling, low maintenance, and long-term reliability. With its NP3 finish, chrome lining, and Mil-Spec construction, it’s a top choice for both everyday builds and suppressed rifle setups.

👉 Upgrade your rifle with the KAK NP3 AR15 BCG and experience the performance edge of one of the most advanced coatings in the industry.