This Might Be the Most Underrated 9mm!

Published on March 12, 2026
Duration: 14:20

This review of the Derya DY9 Island 9mm pistol highlights its unique 'island barrel' design and factory RMR cut slide. The presenter, RGG, emphasizes independent testing, finding the pistol to be highly reliable across various ammunition types and compatible with Glock magazines. While the price point is noted as slightly high, the overall performance, features, and reliability earn it an 'above average' rating.

Quick Summary

The Derya DY9 Island 9mm pistol features a unique 'island barrel' with gas ports and a factory RMR cut slide. It boasts perfect reliability across various ammunition types and is compatible with Glock magazines, earning an overall score of 84.5/100.

Chapters

  1. 00:00Video Intro and Shooting
  2. 00:26Channel Introduction and Derya Background
  3. 01:10Introducing Derya DY9 Island
  4. 01:45Features and Glock Compatibility
  5. 02:27Island Barrel Explained
  6. 03:12Reviewer's Testing Approach
  7. 04:00Range Setup and First Shots
  8. 05:05Ammo Testing and Initial Impressions
  9. 05:47Guests and Target Check
  10. 06:44Guest Shooter Feedback
  11. 07:49Jacksonville, Florida Connection
  12. 08:09Glock Magazine Compatibility
  13. 08:26Trigger Assessment
  14. 09:04Practical Rating System Explained
  15. 09:59Packaging Score (9.5)
  16. 10:16Build Quality Score (8.5)
  17. 10:48Features Score (9)
  18. 11:17Trigger Score (7.5)
  19. 11:19Performance Score (8.5)
  20. 11:39Availability Score (7)
  21. 12:09Usage Score (9)
  22. 12:31Aftermarket Support Score (8)
  23. 12:45Reliability Score (10)
  24. 13:17Value Score (7.5)
  25. 13:42Overall Score and Conclusion

Frequently Asked Questions

What makes the Derya DY9 Island pistol unique?

The Derya DY9 Island stands out with its 'island barrel' design, which integrates the barrel into the slide and features four gas ports. It also comes with a factory RMR cut slide, making it ready for red dot optics.

Is the Derya DY9 Island reliable with different types of ammunition?

Yes, the Derya DY9 Island demonstrated perfect reliability, scoring a 10/10. It flawlessly handled a wide variety of ammunition, including 115gr to 158gr loads, hollow points, FMJ, and steel case, with OEM Glock magazines.

How does the Derya DY9 Island's trigger compare to a Glock?

The Derya DY9 Island's trigger is rated 7.5/10 and is described as having a good take-up, a defined wall, and a clean break. The reviewer found it to be superior to a stock Glock trigger.

What is the overall performance rating of the Derya DY9 Island?

The Derya DY9 Island received an overall score of 84.5 out of 100, classifying it as an 'above average firearm'. Its performance, reliability, and features contribute significantly to this high rating.

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