CMMG Mk47 Is It AK, AR, or Something Else?

Published on November 8, 2020
Duration: 5:11

The CMMG Mk47 'Mutant' is a hybrid firearm designed to integrate the 7.62x39mm cartridge into an AR-15-style platform. It addresses common reliability issues by utilizing a beefed-up bolt based on a .308 design and a modified firing pin mechanism for reliable primer ignition with difficult Russian primers. The rifle accepts AK magazines, and its receiver set is proprietary to accommodate these and the larger bolt carrier group. While offering AR-like ergonomics and controls, it notably lacks a last-round bolt hold-open feature, a common trait of AK magazine-fed systems.

Quick Summary

The CMMG Mk47 'Mutant' is a hybrid firearm designed for the 7.62x39mm cartridge, blending AR-15 ergonomics with AK-47 reliability. It features a robust bolt based on a .308 design and proprietary receivers that accept AK magazines, ensuring consistent primer ignition and feeding.

Chapters

  1. 00:19Introduction to CMMG Mk47
  2. 00:44Muzzle Brake and Threading
  3. 00:56CMMG Handguard and Receivers
  4. 01:01AK Magazine Compatibility
  5. 01:17Reliability: Primer Ignition and Bolt
  6. 01:58History of the CMMG Mutant
  7. 02:14Bolt Design and Durability
  8. 02:25Feeding Challenges Solved
  9. 02:44AR vs. AK Components
  10. 02:47Handling and Feel
  11. 02:57Fire Controls and Grip
  12. 03:05Charging Handle
  13. 03:16Trigger Quality
  14. 03:23Overall Performance
  15. 03:31Resolute 300 Model Details
  16. 04:11Final Thoughts and Downsides
  17. 04:23Last Round Bolt Hold Open Discussion
  18. 04:40Ammo Availability Advantage

Frequently Asked Questions

What makes the CMMG Mk47 unique compared to standard AR-15s?

The CMMG Mk47 is unique because it's designed to reliably fire the 7.62x39mm cartridge, a task many AR-15 variants struggle with. It achieves this through a beefed-up bolt based on a .308 design and proprietary receivers that accept AK magazines.

How does the CMMG Mk47 address reliability issues with 7.62x39mm ammunition?

CMMG addressed reliability by using a stronger bolt, scaled down from a .308 design, and modifying the firing pin mechanism. This ensures consistent primer ignition, even with the harder primers often found in Russian 7.62x39mm ammunition.

What are the key AR and AK features of the CMMG Mk47?

The Mk47 features AR-style ergonomics like ambidextrous fire controls, an AR-style charging handle, and a Geissele trigger. Its AK influence comes from its ability to reliably feed 7.62x39mm ammunition using standard AK magazines.

What is the main drawback of the CMMG Mk47?

The primary drawback of the CMMG Mk47 is the absence of a last-round bolt hold-open feature. This is a common characteristic when adapting firearms to accept AK magazines, which typically lack this functionality.

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