The KAK Enhanced Bolt Carrier Group, AR9 9mm, Nitride, Black (brand part no. MO-KAK9MMENHBCG) is a complete bolt carrier group built specifically for blowback-operated 9mm AR platforms. KAK Industry was founded and incorporated in 2011 by Kurt Kosman to address a gap in the market for quality, American-made AR components at affordable, sustainable prices. Because an AR9 relies on straight blowback rather than gas operation, its carrier is a different design than a 5.56 gas-gun carrier, and using the correct 9mm-specific carrier matters for reliable cycling. This carrier is finished in a durable black nitride coating, which resists corrosion and wear better than a bare or phosphate finish.

Key Specifications

• Built specifically for blowback-operated AR9 9mm platforms.
• Finished in black nitride for corrosion and wear resistance.
• Sold as a complete, Enhanced bolt carrier group, ready to install.

Frequently Asked Questions

Will this fit a standard 5.56 AR-15? No, this carrier is built specifically for blowback-operated AR9 9mm platforms, not gas-impingement 5.56 uppers.

What finish does this carrier use? A durable black nitride coating for corrosion and wear resistance.

Buy the KAK Enhanced Bolt Carrier Group, AR9

Get a correctly designed, nitride-finished carrier built specifically for a 9mm AR build. Browse Schaefer Defense’s AR bolt carrier groups and order from our Lubbock, Texas gun shop for fast shipping.