GLOCK 43X MOS AND HOLOSUN EPS CARRY COMBO ISSUES!

Published on April 7, 2024
Duration: 5:15

This guide addresses a common issue with the Glock 43X MOS when mounting the Holosun EPS Carry optic. The primary problem identified is the right-side optic mounting screw being too long, causing it to interfere with the extractor and lead to failure-to-extract malfunctions. The solution involves using shorter screws on the right side to prevent this contact and ensure reliable firearm operation.

Quick Summary

Failure-to-extract malfunctions on a Glock 43X MOS with an aftermarket optic, like the Holosun EPS Carry, are often caused by the right-side optic mounting screw being too long. This screw can protrude and make contact with the firearm's extractor, preventing it from properly ejecting spent casings. The solution is to use shorter screws on the right side.

Chapters

  1. 00:02Introduction and Optic Issue
  2. 00:09Holosun EPS Carry Overview
  3. 00:26Range Malfunctions Identified
  4. 00:54Magazine Testing (PSA Dagger & Shield Arms)
  5. 01:34Diagnosing Extractor Issues
  6. 01:45Hearsay: Short Screw for 43X MOS
  7. 02:08Optic Removal Test
  8. 02:24The Screw Length Problem Explained
  9. 02:53Temporary Solution: No Optic
  10. 03:08Initial Optic Zeroing Impressions
  11. 03:34Advice for 43X MOS Owners
  12. 03:45Glock Aftermarket Reliance Critique
  13. 04:00Magazine Capacity Comparison
  14. 04:11Optic and Plate Mounting Challenges
  15. 04:30Mixed Parts Concerns
  16. 04:41Sig XMacro Comparison
  17. 05:03Final Advice on Screw Size

Frequently Asked Questions

What causes failure-to-extract issues on a Glock 43X MOS with an aftermarket optic?

Failure-to-extract malfunctions on a Glock 43X MOS with an aftermarket optic, like the Holosun EPS Carry, are often caused by the right-side optic mounting screw being too long. This screw can protrude and make contact with the firearm's extractor, preventing it from properly ejecting spent casings.

How can I test if my optic is causing malfunctions on my Glock 43X MOS?

To test if your optic is causing malfunctions on your Glock 43X MOS, remove the optic entirely and then test fire the pistol with the same magazines and ammunition. If the malfunctions cease after removing the optic, it strongly indicates that the optic or its mounting hardware is the source of the problem.

What is the solution for optic mounting screw interference on a Glock 43X MOS?

The solution for optic mounting screw interference on a Glock 43X MOS is to use shorter screws on the right side of the optic mount. This ensures the screw threads into the optic plate but does not extend far enough to make contact with the internal extractor mechanism, thus preventing malfunctions.

Are there specific screw length requirements for mounting optics on a Glock 43X MOS?

Yes, there are specific screw length requirements. For the Glock 43X MOS, the right-side optic mounting screw must be shorter than the left-side screw. This prevents the right screw from making contact with the extractor, which is a common cause of cycling issues when mounting optics.

More Tactical & Gear Videos You Might Like

More from Locs N Load Firearm Reviews

View all →