Mounting a red dot on Ben Stoeger’s Glock 47

Published on April 13, 2025
Duration: 17:48

This guide details the process of mounting a Vortex Defender XL red dot sight onto a Glock 47 MOS pistol using an Arise Manufacturing Low Rider plate. It emphasizes the importance of proper torque specifications, the use of blue Loctite to prevent screws from backing out, and the application of witness marks for ongoing monitoring. The instruction is provided by Joel Park, who has extensive experience mounting optics on Ben Stoeger's firearms.

Quick Summary

When mounting a red dot sight on a Glock MOS, use blue Loctite on the screws and tighten them to the manufacturer's recommended torque, typically around 14-15 inch-pounds. Applying witness marks from the optic housing to the screw heads is essential for monitoring tightness and preventing loosening from recoil.

Chapters

  1. 00:01Introduction and Overview
  2. 00:10Glock 47 MOS and Optic Preparation
  3. 00:30Vortex Defender XL Optic and Arise Plate
  4. 01:11Mounting Process Walkthrough
  5. 02:00Removing Factory Plate
  6. 03:02Introducing Arise Low Rider Plate
  7. 03:51Hardware and Screw Selection
  8. 04:49Optic Placement on Plate
  9. 05:54Applying Loctite to Plate Screws
  10. 08:28Torquing Optic Plate Screws
  11. 10:26Witness Marking the Plate
  12. 11:20Mounting the Red Dot Optic
  13. 12:32Hardware for Optic Mounting
  14. 13:18Applying Loctite to Optic Screws
  15. 14:21Torquing Optic Mounting Screws
  16. 14:58Witness Marking the Optic
  17. 15:46Post-Mounting Recommendations
  18. 16:17Loctite Curing and Next Steps
  19. 17:08Torque Driver Storage
  20. 17:30Conclusion and Q&A Prompt

Frequently Asked Questions

What is the recommended torque setting for mounting an optic plate on a Glock MOS system?

The recommended torque setting for mounting optic plates and optics on Glock MOS systems is typically around 14 to 15 inch-pounds. Using a torque wrench is crucial to avoid overtightening, which can damage the firearm or optic, and undertightening, which can lead to loosening.

What type of Loctite should be used when mounting a red dot sight?

Blue Loctite, such as Loctite 242 or its stick equivalent, is recommended for mounting optic plates and red dot sights. This type of Loctite provides a secure bond to prevent loosening from recoil but can be removed with moderate force without requiring heat, unlike red Loctite.

How can I ensure my red dot sight screws don't come loose?

To prevent red dot sight screws from loosening, use blue Loctite on the threads and tighten them to the manufacturer's specified torque. Additionally, apply witness marks (lines drawn from the optic housing to the screw head) to easily detect any movement or loosening over time.

What is the purpose of witness marks when mounting an optic?

Witness marks are lines drawn from a fixed point (like the optic housing or plate) onto the screw head. They serve as a visual indicator to quickly check if a screw has backed out or loosened due to recoil or vibration, allowing for timely re-tightening.

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