CMMG Mk3 CBR 308 WIN Rifle

Published on June 2, 2018
Duration: 5:21

This review covers the CMMG Mk3 CBR rifle in .308 WIN, highlighting its construction from 7075 T6 billet aluminum and a 16-inch 416 stainless steel barrel. The rifle features a proprietary muzzle brake, a Geissele 2-stage trigger, and a KeyMod handguard. It is built on the DPMS pattern for AR-10 compatibility. The reviewer notes its accuracy, achieving around 1.25-inch groups with Black Hills and SIG ammunition, and discusses its suitability for hunting and law enforcement applications.

Quick Summary

The CMMG Mk3 CBR rifle in .308 WIN features a robust construction from 7075 T6 billet aluminum for receivers and a 16-inch 416 stainless steel barrel. It includes a Geissele 2-stage trigger that enhances accuracy, achieving around 1.25-inch groups with quality ammunition. The rifle weighs approximately 9.7 pounds due to its heavy barrel.

Chapters

  1. 00:01Introduction to CMMG Mk3 CBR
  2. 00:25Barrel and Muzzle Brake Details
  3. 00:34Receiver and Charging Handle Construction
  4. 00:40Geissele 2-Stage Trigger
  5. 00:45CMMG RKM15 KeyMod Handguard
  6. 00:59Gas System and Backup Sights
  7. 01:24Pistol Grip and Stock
  8. 01:37Bolt Carrier Group and DPMS Pattern
  9. 01:56Optic Discussion (Kahles KXi3)
  10. 03:49Ammunition and Accuracy Testing
  11. 04:13Muzzle Brake vs. Flash Suppressor
  12. 04:26Weight and Barrel Considerations
  13. 04:36Optic and Sight Recommendations
  14. 05:05Conclusion and Versatility

Frequently Asked Questions

What are the key construction materials of the CMMG Mk3 CBR rifle?

The CMMG Mk3 CBR rifle is constructed from 7075 T6 billet aluminum for its upper and lower receivers, as well as the charging handle. Its 16-inch barrel is manufactured from 416 stainless steel, contributing to its durability and performance.

What kind of trigger does the CMMG Mk3 CBR rifle come with, and how does it affect accuracy?

The CMMG Mk3 CBR is equipped with a Geissele 2-stage trigger. The reviewer noted that this trigger made a significant difference in the rifle's accuracy, suggesting it's a key component for precise shooting.

What is the typical accuracy achieved with the CMMG Mk3 CBR rifle?

During testing with Black Hills 175gr TMJ and SIG 175gr TMJ ammunition, the CMMG Mk3 CBR rifle consistently achieved groups of approximately 1.25 inches. This level of accuracy makes it suitable for various applications.

What is the weight of the CMMG Mk3 CBR rifle, and what contributes to it?

The CMMG Mk3 CBR rifle weighs approximately 9.7 pounds. This weight is largely due to its heavy barrel, which is a 16-inch 416 stainless steel component, contributing to its robust build and stability.

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