Hands-On The NEW Enclosed Vortex Defenders!

Published on September 18, 2025
Duration: 13:18

This guide details the installation of new enclosed Vortex Defender ST and CCW optics on Glock MOS pistols, as demonstrated by Lenny McGill from GlockStore. It covers specific considerations for the Glock 43X MOS and Glock 19 MOS, including the use of adapter plates and potential co-witness issues. The importance of proper screw length and Loctite application is emphasized for a secure and reliable installation.

Quick Summary

Installing Vortex Defender ST/CCW optics on Glock MOS pistols involves direct mounting on the 43X MOS or using an adapter plate on the 19 MOS. Key steps include using correct screws, applying blue Loctite, and being aware of potential co-witness limitations with factory sights on the 43X MOS. The enclosed design offers enhanced durability.

Chapters

  1. 00:00Introduction and Vortex Day Announcement
  2. 00:30New Enclosed Vortex Defender Optics
  3. 01:47Defender ST Features - Enclosed Design
  4. 02:39Solar Panel and Battery Access
  5. 02:49Buttons and Reticle Options
  6. 03:07Preference for Circle Dot Reticle
  7. 03:41Installation Differences - CCW Version
  8. 04:00Glock 43X MOS and Footprint
  9. 05:25Co-witness with Factory Sights
  10. 06:03CCW Version Features Recap
  11. 06:35New Glock 43X Footprint
  12. 07:5243X Screw Length Warning
  13. 08:59Defender ST Installation - Glock 19 MOS
  14. 09:46Adapter Plate and Footprint
  15. 10:33Screw Installation and Loctite
  16. 11:08Included Tools and Packaging
  17. 11:44Availability and Inventory
  18. 12:12Comparison with Open Optics
  19. 12:32Included Cover
  20. 12:41Closing and Vortex Day Reminder

Frequently Asked Questions

How do I install a Vortex Defender optic on a Glock 43X MOS?

For a Glock 43X MOS, the Vortex Defender CCW optic mounts directly into the MOS cutout without needing an adapter plate. Ensure you use the correct length screws provided by Vortex and apply blue Loctite to prevent loosening. Be mindful of screw length to avoid interfering with the slide's internal components.

What is the advantage of the enclosed design on Vortex Defender optics?

The enclosed design of the Vortex Defender ST and CCW optics provides superior protection against elements like dust, dirt, and water. This enhances the optic's durability and reliability in harsh conditions compared to open-emitter red dot sights.

Can I achieve a co-witness with factory sights when installing a Vortex Defender CCW on a Glock 43X MOS?

Achieving a full co-witness with factory iron sights might not be possible when mounting a Vortex Defender CCW on a Glock 43X MOS. Suppressor height sights are often recommended if a co-witness capability is desired with this optic setup.

What is the power source for the Vortex Defender ST and CCW optics?

The Vortex Defender ST and CCW optics feature a dual power system. They primarily run on a solar panel, with a backup battery that can be accessed from the side of the optic for easy replacement without needing to remove the sight from the firearm.

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