Glock 19 COA | Radian Gen 6 | “Rolandito” Build

Published on May 10, 2026
Duration: 21:16

This video provides an in-depth review of a custom Glock 19 Gen 6, dubbed the 'Rolandito' build, featuring the Radian Ramjet Afterburner and Aimpoint COA optic. The presenter, Roger Barrera of QVO Tactical, along with guest Marco, demonstrates the firearm's performance through various drills, including accuracy testing, bill drills, and doubles drills. They discuss the firearm's ergonomics, the effectiveness of the Radian comp for recoil reduction, and the clarity and functionality of the Aimpoint COA optic. The video also touches on the Gen 6 Glock's improvements and the overall value proposition of such a customized firearm.

Quick Summary

The 'Rolandito' Glock 19 Gen 6 build features the Radian Ramjet Afterburner for significant recoil reduction and the Aimpoint COA optic for a clear sight picture. This setup, combined with the Gen 6 Glock's improved ergonomics, offers enhanced shootability and accuracy, achieving sub-1-inch groups at 15 yards.

Chapters

  1. 00:26Introduction and Setup Overview
  2. 00:54Product Review Transparency
  3. 01:19First Rounds and Initial Impressions
  4. 02:03Radian Ramjet Performance
  5. 02:28Aimpoint COA Optic Discussion
  6. 03:01Glock 19 as a First Gun Recommendation
  7. 04:36Unexpected Out-of-the-Box Zeroing
  8. 05:02Accuracy Testing at 15 Yards
  9. 06:06Gen 6 Glock Improvements
  10. 06:42Bill Drills with QVO Holster
  11. 09:29Doubles Drill Performance
  12. 09:55Gen 6 Glock Trigger Breakdown
  13. 10:26Recoil Comparison: Ported vs. Stock Glock 45
  14. 12:32Felt Recoil and Dot Movement Analysis
  15. 13:05Build Rundown: COA Edition and Add-ons
  16. 14:32Modern Roland Special Components
  17. 15:30Cost Analysis of the Build
  18. 16:02Glock Reliability and Value
  19. 17:17Marco's Perspective on Glock Builds
  20. 18:07Gen 6 Model Preferences
  21. 19:12Radian Ramjet Gen 5 vs. Gen 6 Compatibility
  22. 20:11Viewer Poll: Favorite Gen 6 Model
  23. 20:33Radian Ramjet Loudness Warning
  24. 20:57Concluding Thoughts and Thanks

Frequently Asked Questions

What are the key components of the 'Rolandito' Glock 19 Gen 6 build?

The 'Rolandito' build features a Glock 19 Gen 6 COA Edition, the Radian Ramjet Afterburner barrel and compensator combo, and an Aimpoint COA optic. It also includes a TR7 HLX light and an SLR Rifle Works magwell.

How does the Radian Ramjet Afterburner affect recoil on the Glock 19?

The Radian Ramjet Afterburner significantly reduces felt recoil and muzzle rise, making the firearm shoot flatter and allowing for faster, more accurate follow-up shots. The dot in the optic also moved less.

What are the advantages of the Aimpoint COA optic on this build?

The Aimpoint COA optic offers a clear 3.5 MOA closed emitter sight picture with a thinner bezel and more compact profile than some other enclosed optics. It integrates seamlessly with the custom slide cut.

Is the Gen 6 Glock 19 suitable for new shooters?

Yes, the Gen 6 Glock 19 is recommended as an excellent first firearm due to its reliability, simplicity, and ease of use. Its straightforward operation allows new shooters to focus on fundamentals without complex safeties.

What kind of accuracy can be expected from this customized Glock 19?

The build demonstrated impressive accuracy, achieving sub-1-inch groups at 15 yards with Supervel 124 grain Ultra Match ammunition right out of the box, even after installing the aftermarket barrel and compensator.

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