The KAK K-SPEC Dual Ejector Bolt Carrier Group, M16 5.56, NP3 (brand part no. MO-425-0510-002) is a complete carrier group built around KAK’s dual ejector system and finished in NP3 nickel-Teflon coating. KAK Industry built the dual ejector design around mil-spec ejectors and springs, centering the ejector holes on the bolt’s locking lugs to avoid reducing strength while improving ejection consistency over a standard single-ejector bolt. The NP3 coating adds a low-friction, corrosion-resistant surface on top of that mechanical upgrade, which helps the carrier run smoother and clean up faster after a range session. Cut to an M16 carrier profile, it is compatible with both M16-pattern and standard semi-auto AR-15 lowers.

Key Specifications

• Uses a dual ejector system built around mil-spec ejectors and springs for more consistent ejection.
• Positions ejector holes centered on the locking lugs to avoid reducing bolt strength.
• Finished in NP3, a nickel-Teflon coating for low friction and corrosion resistance.
• Cut to an M16 carrier profile, compatible with both M16-pattern and semi-auto AR-15 lowers.
• Built for the 5.56 AR-15 platform.

Frequently Asked Questions

What does the dual ejector system do? It uses mil-spec ejectors and springs to increase ejection reliability and add consistency to the ejection pattern compared to a standard carrier.

What is NP3 coating? A nickel-Teflon finish known for a smooth, low-friction, corrosion-resistant surface that also makes cleaning easier.

Buy the KAK K-SPEC Dual Ejector Bolt Carrier Group, NP3

Combine mechanical ejection reliability with an easy-clean NP3 finish on a 5.56 AR-15 carrier. Browse Schaefer Defense’s AR bolt carrier groups and order from our Lubbock, Texas gun shop for fast shipping.