Gen 6 optic not staying put

Published on March 5, 2026
Duration: 12:01

This expert guide, informed by a firearms instructor, details potential issues with the Glock Gen 6 factory optic mounting system. It highlights that the universal cut may not provide optimal stability, leading to optics coming loose, as demonstrated by an O-Site optic failure. The guide recommends considering aftermarket plates like Aris for a more secure, machined fit and outlines steps for troubleshooting and installation.

Quick Summary

The Glock Gen 6 optic mounting system's universal cut may not fully utilize all four mounting posts, leading to potential instability and optics coming loose. Experts recommend using aftermarket optic mounting plates, such as those from Aris, for a more secure, machined fit and enhanced reliability.

Chapters

  1. 00:00Introduction: Glock Gen 6 Optic Mounting Concerns
  2. 00:45Glock Gen 6 Mount Design Flaws Explained
  3. 01:22O-Site Optic Failure on Gen 6 Glock
  4. 02:46Aftermarket Plates for Glock Gen 6: The Solution?
  5. 03:04Disappointment with Glock Factory Solution
  6. 04:26Why Not to Rush Gen 6 Glock Adoption
  7. 05:18Glock's Universal Cut vs. Snug Fit
  8. 07:27Gen 6 Grip and Trigger Feel
  9. 08:38Plastic Gasket vs. Mechanical Fit for Optics
  10. 10:11Vortex Optic Reliability and Warranty
  11. 11:50Conclusion: Upcoming Plate Installation

Frequently Asked Questions

Why might a red dot optic come loose on a Glock Gen 6?

The Glock Gen 6 features a universal optic cut that may not fully engage all mounting posts, leading to less stability. This can cause optics, like the O-Site, to loosen over time due to recoil, even with proper installation.

What is the recommended solution for unstable optic mounting on Glock Gen 6?

For improved optic stability on Glock Gen 6 firearms, experts recommend using aftermarket optic mounting plates. These plates are often machined for a snugger fit and better engagement with the slide's posts.

Are aftermarket plates necessary for all Glock Gen 6 optics?

While some optics might hold initially, the 'hit or miss' nature of the Gen 6 factory mounting system suggests that aftermarket plates are a prudent choice to mitigate the risk of optic loosening and ensure long-term reliability.

What specific optic mounting issues were observed on the Glock Gen 6?

The primary issue observed is that the Gen 6's universal optic cut doesn't always utilize all four mounting posts, leading to a less secure fit. This was exemplified by an O-Site optic coming loose after training.

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