New CMMG Banshee 5.7mm Carbine (SHOT Show 2020)

Published on January 21, 2020
Duration: 3:30

This video provides an in-depth look at the CMMG Banshee 5.7mm carbine introduced at SHOT Show 2020. It highlights the unique aspect of using a standard AR-15 lower receiver with a proprietary 40-round magazine, differentiating it from previous Banshee models that used FN Five-seveN handgun magazines. The review emphasizes the compatibility with existing AR-15 lowers and the benefits of CMMG's radial delayed blowback system for the 5.7x28mm cartridge.

Quick Summary

The CMMG Banshee 5.7mm carbine, showcased at SHOT Show 2020, introduces a significant change by utilizing a standard AR-15 lower receiver and a proprietary 40-round magazine. It employs CMMG's radial delayed blowback system, offering an alternative to direct blowback and allowing the use of standard AR-15 carbine buffers and springs.

Chapters

  1. 00:03Introduction to CMMG Banshee 5.7mm
  2. 00:18Unique Magazine Well Design
  3. 00:24Banshee 5.7 vs. Market Offerings
  4. 00:39Evolution from FN Five-seveN Magazines
  5. 00:47Standard AR Lower Compatibility
  6. 00:5440-Round and 10-Round Magazines
  7. 01:06Radial Delayed Blowback Upper
  8. 01:10Barrel Length Options for Builders
  9. 01:21Proprietary vs. Expensive Handgun Magazines
  10. 01:36Conversions for Form 1 Lowers and SBRs
  11. 01:53New Lowers Compatible with Existing Uppers
  12. 02:00Upgrading Previous Banshee Owners
  13. 02:10Introduction of 16-Inch Carbine
  14. 02:23Suppressor Compatibility with 5.7x28mm
  15. 02:30Barrel Threading (1/2x28)
  16. 02:37Recoil and Blowback Systems
  17. 02:45CMMG's Non-Direct Blowback Innovation
  18. 02:58Standard Carbine Buffer and Spring
  19. 03:16SHOT Show 2020 Wrap-up

Frequently Asked Questions

What is unique about the new CMMG Banshee 5.7mm carbine?

The key innovation is its compatibility with a standard AR-15 lower receiver, utilizing a proprietary 40-round magazine. This differs from previous Banshee 5.7 models that used FN Five-seveN handgun magazines, offering greater flexibility for builders and owners.

What operating system does the CMMG Banshee 5.7mm carbine use?

The CMMG Banshee 5.7mm carbine features CMMG's patented radial delayed blowback operating system. This system is highlighted as an advancement over the direct blowback systems commonly found in other 5.7x28mm shoulder-fired firearms.

Can I use my existing AR-15 lower with the CMMG Banshee 5.7mm upper?

Yes, the CMMG Banshee 5.7mm system is designed to work with a standard milspec AR-15 lower receiver. This allows users to build their own carbine or convert existing AR-15 platforms.

What are the barrel length options for the CMMG Banshee 5.7mm upper?

CMMG offers bolt barrel combinations for builders in 5-inch, 8-inch, and 16-inch barrel lengths for their 5.7x28mm radial delayed blowback uppers.

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