Replacing the front sight on a Glock 21

Published on May 12, 2013
Duration: 17:38

This guide details the process of replacing a damaged front sight on a Glock 21. It covers the necessary tools, including a specific front sight tool and Loctite, and provides step-by-step instructions for removal and installation. The video emphasizes proper alignment and the use of adhesive to secure the new sight, while also noting the differences in complexity compared to rear sight replacement.

Quick Summary

To replace the front sight on a Glock 21, you'll need a specialized Glock front sight tool and Loctite. Remove the old sight by unscrewing it from underneath, clean the area, align the new sight with the dot facing rearward, and thread in the new screw with Loctite until snug. Avoid overtightening.

Chapters

  1. 00:29Introduction & Damaged Sight
  2. 01:40Tools Needed for Replacement
  3. 02:47Disassembling the Slide
  4. 04:22Locating the Front Sight Screw
  5. 05:24Removing the Old Front Sight
  6. 06:34Cleaning the Installation Area
  7. 07:42Aligning the New Front Sight
  8. 09:07Applying Loctite and Installing Screw
  9. 11:09Tightening the Screw
  10. 13:47Final Check and Setting Loctite
  11. 14:10Comparison to Rear Sight Replacement
  12. 15:11Post-Installation View
  13. 16:33Conclusion

Frequently Asked Questions

What tools are needed to replace the front sight on a Glock 21?

You will need a specialized Glock front sight tool, a small amount of Loctite (red is recommended), and rubbing alcohol for cleanup. Ensure the firearm is unloaded before starting any work.

How is the front sight attached to a Glock 21 slide?

The front sight on a Glock 21 is secured by a single hex-head screw that threads into the sight post from underneath the slide. The sight itself has an oval foot that fits into a corresponding oval hole in the slide.

Should I use Loctite when installing a new Glock front sight?

Yes, applying a small drop of Loctite (red is often recommended) to the screw or the threaded hole helps prevent the sight from loosening due to recoil, ensuring a secure fit.

Is replacing the front sight on a Glock difficult?

Replacing the front sight on a Glock is considered a relatively straightforward process for beginners, requiring only a few specific tools. It is less complex than replacing the rear sight, which necessitates a sight press.

More Gunsmithing & DIY Videos You Might Like

More from Justin Opinion

View all →