Possible Major Problems Coming With Glock 43x/48 15 Round OEM Metal Mags..

Published on May 22, 2026
Duration: 8:28

This video from SPN Firearms explores a potential long-term issue with Glock 43X and 48 OEM 15-round metal magazines when used with factory polymer magazine releases. The presenter observed wear on a metal magazine and a subsequent magazine drop issue on a modified Glock 19, theorizing that the metal magazine's interaction with the polymer mag release can cause wear over time, potentially leading to reliability problems. Further testing is planned to confirm if this metal-on-polymer interaction degrades the magazine release or the magazine itself, impacting firearm function, especially for those who train frequently.

Quick Summary

The potential issue with Glock 43X and 48 OEM 15-round metal magazines lies in their interaction with factory polymer magazine releases. Over time, metal-on-polymer friction from frequent use can cause wear on the polymer release, potentially leading to a less secure magazine fit, magazine drops, and overall firearm unreliability.

Chapters

  1. 00:00Introduction & Initial Observation
  2. 00:22Potential Problem with Glock 43X/48 Metal Mags
  3. 00:54Glock 19 Malfunction Example
  4. 01:15Aftermarket vs. OEM Mag Release
  5. 01:37Polymer vs. Metal on Polymer
  6. 01:53Wear on Magazine and Reliability Impact
  7. 02:12Glock OEM Metal Magazine Interaction
  8. 02:29Grit Grips Mag Release Test
  9. 02:42Previous Owner's Experience
  10. 03:05Long-Term Wear Concerns
  11. 03:15Planned Durability Testing
  12. 03:41Metal vs. Polymer Wear Dynamics
  13. 03:57Testing OEM Glock 43X/48 Setups
  14. 04:16Current Reliability vs. Future Concerns
  15. 04:46Why No Metal Mag Release from Glock?
  16. 04:58Conclusion & Call to Action

Frequently Asked Questions

What is the potential problem with Glock 43X and 48 OEM 15-round metal magazines?

The primary concern is that the metal construction of the OEM 15-round magazines may cause wear on the firearm's factory polymer magazine release over time. This metal-on-polymer friction, especially with frequent use, could lead to a less secure magazine fit and potential reliability issues like magazine drops or malfunctions.

How does metal-on-polymer wear affect firearm reliability?

When metal components rub against polymer, especially under the stress of recoil and repeated magazine changes, the polymer can degrade. This wear can alter the dimensions or function of the magazine release, preventing it from securely holding the magazine in place, thus compromising the firearm's ability to function reliably.

Why might Glock not include a metal magazine release with their metal magazines?

It's speculated that Glock may not include metal magazine releases with their metal magazines to avoid potential wear issues on the magazines themselves or to encourage users to maintain the original polymer-on-polymer system, which is generally considered more durable for long-term, high-volume use without specific aftermarket modifications.

What testing is planned to address this potential issue?

The presenter plans to conduct extensive testing on OEM Glock 43X and 48 setups with polymer magazine releases and metal magazines, firing 300-500 rounds per range session over several weeks to observe any degradation or reliability problems that may arise from this specific material combination.

Related News

All News →

More Tactical & Gear Videos You Might Like

More from SPN Firearms

View all →