KAK AR15 BCG – 5.56 / 300 Blackout, Chrome Lined Phosphate OEM
Not Yet Rated | Write the First Review SKU: 222-KAK-425-0512-001
UPC: 811163000000
MFG#: 425-0512-001

The KAK Industry OEM AR15 Bolt Carrier Group (BCG) is designed to deliver Mil-Spec reliability at an affordable price point. Built for 5.56 NATO and 300 Blackout rifles, this carrier group features a chrome lined phosphate finish and a full auto profile for durability, smooth cycling, and long-term performance. Whether you’re building a new AR or upgrading an existing rifle, this OEM BCG provides the fit, function, and dependability you expect from KAK Industry.

Key Features

• Caliber Compatibility – Works with both 5.56 NATO and 300 Blackout AR-15 platforms

• Chrome Lined Phosphate Finish – Rugged phosphate exterior with a slick chrome-lined interior for corrosion resistance and smooth operation

• OEM Mil-Spec Design – Precision machined to OEM standards for exact fit and reliable performance

• Full Auto Profile Carrier – Machined to M16 specifications for added strength and durability

• Materials & Testing – 8620 steel carrier, Carpenter 158 steel bolt, heat-treated, shot peened, and MPI tested for Mil-Spec reliability

• Easy Maintenance – Chrome-lined interior makes cleaning simple even after high round counts

• Made by KAK Industry – Trusted U.S. manufacturer of AR15 parts known for quality machining and tight tolerances

Why Choose Chrome Lined Phosphate?

The chrome lined phosphate finish is a proven Mil-Spec standard. Phosphate on the outside provides toughness and oil retention, while the chrome-lined interior reduces friction, resists fouling, and makes cleaning easier. This balance makes it ideal for shooters who want long-lasting reliability with minimal maintenance.

OEM Reliability for Every Build

As an OEM-spec bolt carrier group, this BCG is built to the same strict standards demanded by major AR15 manufacturers. That means you can trust it to run smoothly in any rifle, whether it’s a range carbine, hunting setup, suppressed build, or defensive AR15.

FAQ – AR15 BCG 5.56 / 300 Blackout Chrome Lined Phosphate OEM

Q: What calibers is this AR15 BCG compatible with?
A: It’s designed for 5.56 NATO and 300 Blackout AR-15 rifles, making it versatile for multi-caliber builds.

Q: Is this AR15 BCG full auto rated?
A: Yes. It’s machined to the M16 full auto profile, providing greater strength and long-term durability.

Q: What’s the benefit of chrome lined phosphate over nitride?
A: Chrome lined phosphate offers the traditional Mil-Spec balance of toughness and smoothness, while nitride is harder and more scratch resistant but less common in military use.

Q: What makes this an OEM BCG?
A: It’s manufactured to original equipment manufacturer (OEM) specifications, ensuring exact fit, compatibility, and proven performance.

Q: Who makes this BCG?
A: It’s produced by KAK Industry, a U.S. manufacturer known for Mil-Spec AR15 parts with tight machining tolerances.

Q: Does this BCG work well with suppressed rifles?
A: Yes. The chrome-lined interior helps resist carbon buildup, making it easier to maintain when running suppressed.

Final Thoughts

The KAK Industry AR15 BCG – 5.56 / 300 Blackout, Chrome Lined Phosphate OEM is the perfect balance of affordability, durability, and Mil-Spec quality. Whether you’re looking for a dependable spare, a primary carrier group for a build, or an OEM-spec upgrade, this BCG delivers consistent performance in every condition.

👉 Upgrade your AR with the KAK OEM AR15 BCG today and experience the difference in reliability and value.

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