Quarter Circle 10 | YKMF-5

Published on April 10, 2022
Duration: 14:10

Roger Barrera of QVO Tactical provides an in-depth review of the Quarter Circle 10 YKMF-5, a 9mm AR pistol designed around MP5 magazines. The review highlights its billet construction, smooth shooting characteristics, and reliability, noting over 500 rounds fired without malfunction. Barrera also discusses its aesthetics, ergonomics, and compares it to other high-end PCCs, while suggesting a lighter trigger as a potential improvement.

Quick Summary

The Quarter Circle 10 YKMF-5 is a 9mm AR pistol built from the ground up around MP5 magazines, featuring a billet 7075 T6 aluminum receiver and a side-charging upper. It offers exceptionally flat and smooth shooting due to its construction and 9mm caliber, demonstrating over 500 rounds of flawless reliability.

Chapters

  1. 00:00Introduction to the YKMF-5
  2. 00:34Roger Barrera & QVO Tactical Intro
  3. 00:43Quarter Circle 10 YKMF-5 Reveal
  4. 01:20Product Review Acquisition Process
  5. 01:47YKMF-5 Technical Specifications
  6. 02:30Quarter Circle 10 Company Philosophy
  7. 03:00The Name 'YKMF-5' Explained
  8. 03:19Aesthetics and First Impressions
  9. 03:31Range Day with Bryce
  10. 04:00Night Shoot Setup in Vegas
  11. 04:22First Shots with the YKMF-5
  12. 04:56Bryce's First Impressions
  13. 05:29Weight and Shooting Dynamics
  14. 05:45Optic Setup: Holosun 509 & Primary Arms
  15. 06:08Range Drills: Build Drill
  16. 06:32Transition Drills
  17. 07:39Accuracy Testing: Paper Groups
  18. 08:22Reload Practice: MP5 Magazines
  19. 09:11Mag Dumps and Reliability Test
  20. 09:47Handguard Temperature Check
  21. 09:59Attaball Illumination AI2 Lighthead
  22. 10:54Overall Thoughts on the YKMF-5
  23. 11:15Price Point Discussion
  24. 12:13One Thing Not Liked: Trigger
  25. 12:39Review Conclusion

Frequently Asked Questions

What makes the Quarter Circle 10 YKMF-5 unique in its design?

The YKMF-5 is unique because it's built from the ground up around the MP5 9mm magazine platform, rather than modifying a rifle. It features a billet 7075 T6 aluminum receiver, a side-charging upper from Gibbs Arms, and a complete blowback system.

How reliable is the Quarter Circle 10 YKMF-5?

The YKMF-5 demonstrated exceptional reliability during testing, with over 500 rounds fired in approximately two and a half hours without a single malfunction. This includes extensive mag dumps, indicating robust performance under stress.

What are the key specifications of the Quarter Circle 10 YKMF-5?

The YKMF-5 is a 9mm AR pistol featuring a 5.5-inch barrel, Bowden Tactical handguard, Dead Air muzzle brake, Phase 5 controls, SP Tactical PDW brace, and accepts MP5 9mm magazines. Its lower receiver is 7075 T6 aluminum with Type 3 hard coat anodization.

How does the YKMF-5 shoot, and what contributes to its performance?

The YKMF-5 shoots very flat and smooth due to its billet construction and the low recoil of the 9mm round. The gun weighs just over five pounds, further contributing to its manageable recoil and ease of target tracking during rapid fire.

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