KAK K-SPEC Enhanced AR15 Bolt – Dual Ejector, Phosphate, 5.56 / 300 Blackout
Not Yet Rated | Write the First Review SKU: 222-KAK-303-0502-011
UPC: 811163000000
MFG#: 303-0502-011

The K-SPEC Enhanced AR15 Bolt is built for shooters who demand strength and reliability from their rifle’s heart. Precision-machined from 9310 steel and finished with a phosphate coating, this bolt is designed to withstand heavy use while maintaining long-term durability. Its dual ejector system delivers consistent, reliable ejection, making it ideal for both 5.56 NATO and 300 Blackout AR-15 rifles. Backed by in-house machining and MPI testing, this is an upgrade you can trust for duty, defense, or high-volume range use.

Key Features

• Dual Ejector System – Improves ejection reliability and consistency under suppressed or unsuppressed fire

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

• Material – Machined from 9310 steel, precision-ground to .0002 tolerances

• Finish – Phosphate exterior for proven durability and corrosion resistance

• Extractor – 4140 steel, phosphate coated, fully machined for strength

• Durability – Each bolt is MPI tested for quality and reliability

• Compatibility – Fits all Mil-Spec and enhanced AR-15 BCGs

• In-House Production – Manufactured by KAK Industry using advanced machining centers and robotics for consistent quality

Why Choose a Phosphate AR15 Bolt?

Phosphate has been the standard finish for military-grade AR-15 bolts for decades because it holds up in harsh environments and offers excellent wear resistance. Unlike slicker finishes that may wear over time, phosphate creates a tough surface that soaks in oil, making it highly reliable under heavy use. For shooters who want a battle-proven finish with long service life, phosphate remains a top choice.

Dual Ejector Reliability

The dual ejector design is engineered to deliver smoother, more consistent ejection than traditional single ejector bolts. By sharing the workload, the system reduces stress on the bolt face and ensures reliable performance in suppressed builds, competition rifles, and defensive ARs. This makes it an especially smart upgrade for those who run high round counts or shoot in varied conditions.

Built for 5.56 NATO and 300 Blackout

The K-SPEC bolt is fully compatible with both 5.56 NATO and 300 Blackout AR-15 rifles, giving you flexibility across platforms. Whether you’re building a lightweight carbine or a suppressed short-barrel rifle, this bolt is designed to perform.

FAQ:

Q: What calibers is this bolt compatible with?
A: It works with both 5.56 NATO and 300 Blackout AR-15 rifles, ensuring flexibility for multi-caliber shooters.

Q: What’s the advantage of a dual ejector system?
A: The dual ejectors provide stronger, more consistent ejection, especially helpful in suppressed rifles or during high-volume shooting.

Q: Is this bolt MPI tested?
A: Yes. Each K-SPEC bolt undergoes Magnetic Particle Inspection (MPI) to confirm strength and structural integrity.

Q: What material is the K-SPEC bolt made from?
A: The bolt is made from 9310 steel with a phosphate finish, paired with a 4140 steel extractor and heat-treated ejectors for long-term reliability.

Q: How does phosphate compare to chrome?
A: Phosphate is the traditional Mil-Spec finish, offering excellent durability and oil retention, while chrome provides a slicker, corrosion-resistant surface. Both are reliable, and KAK offers each option.

Q: Can this bolt be used in any AR15 BCG?
A: Yes. The K-SPEC bolt is fully compatible with both standard Mil-Spec carriers and enhanced AR-15 bolt carrier groups.

Final Thoughts

The K-SPEC Enhanced AR15 Bolt – 5.56 / 300 Blackout, Dual Ejector, Phosphate delivers durability, consistency, and modern enhancements while staying true to Mil-Spec standards. With its phosphate finish, dual ejector reliability, and precision machining, it’s the perfect upgrade for any AR-15 build.

👉 Upgrade to the K-SPEC Enhanced AR15 Bolt and experience dependable performance, round after round.