The Colt CK-901

Published on January 24, 2026
Duration: 47:46

This guide details the disassembly and inspection of the Colt CK-901's proprietary bolt carrier group, a critical component for its reliable function with 7.62x39mm ammunition. The video emphasizes the importance of checking the beefed-up bolt lugs and redesigned firing pin, key features developed to overcome common failure points in AR-15 conversions of this caliber. Proper cleaning and reassembly are crucial for maintaining the rifle's performance.

Quick Summary

The Colt CK-901 is a 7.62x39mm AR-15 platform rifle developed for a Yemeni military contract, notable for its proprietary bolt carrier group with reinforced lugs and a redesigned firing pin for reliability. It was engineered to accept standard AK-47 magazines, a significant departure from typical AR-15 magazine wells.

Chapters

  1. 00:00Introduction to the Colt CK-901
  2. 00:38Colt's History with 7.62x39mm
  3. 06:15The Yemeni Contract and CK-901 Development
  4. 08:36Technical Specifications and Features
  5. 11:45Magazine and Component Details
  6. 18:16Bolt Carrier Group and Firing Pin Innovation
  7. 23:12Legacy and Modern Commercial Variants

Frequently Asked Questions

What makes the Colt CK-901's bolt carrier group unique?

The Colt CK-901 features a proprietary bolt carrier group with a beefed-up bolt designed to prevent lug breakage common in other 7.62x39mm AR-15 conversions. It also includes a redesigned firing pin for reliable ignition of harder primers.

Can the Colt CK-901 use standard AK-47 magazines?

Yes, a key design feature of the Colt CK-901, developed for a specific contract, was its ability to reliably accept standard AK-47 magazines, utilizing a modified lower receiver for this purpose.

Why was the Colt CK-901 developed?

The Colt CK-901 was specifically developed in response to a contract request from the Yemeni Republican Guard for an AR-platform rifle capable of utilizing their existing stocks of 7.62x39mm ammunition and AK magazines.

What are the key technical specifications of the Colt CK-901?

The Colt CK-901 has a 16-inch chrome-lined barrel with a 1:12 twist rate, weighs approximately 9.4 pounds, and features an internal piston operating system. It is chambered in 7.62x39mm and has a cyclic rate of 750-950 RPM.

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