Did Glock Make The Same Gun Twice?

Published on February 25, 2026
Duration: 8:32

This video compares the Glock 19X and Glock 45, highlighting their similarities and key differences. While both feature a Glock 17-sized grip and a Glock 19-sized slide, the 19X has a unique lip on its magazine base that prevents standard Gen 5 Glock magazines from seating properly without modification. The 19X also comes in Coyote Tan and lacks front slide serrations on some early models, whereas the Glock 45 typically includes them. Both are optics-ready and suitable for various applications.

Quick Summary

The primary difference between the Glock 19X and Glock 45 lies in magazine compatibility. The Glock 19X features a unique lip on its magazine base that prevents standard Gen 5 Glock magazines from seating properly, often requiring modification. The Glock 45, conversely, accepts standard Gen 5 magazines without issue.

Frequently Asked Questions

What is the main difference between the Glock 19X and the Glock 45?

The most significant difference is magazine compatibility. The Glock 19X has a lip on its magazine base that prevents standard Gen 5 Glock magazines from seating properly, requiring modification. The Glock 45 does not have this lip, allowing standard Gen 5 magazines to seat correctly.

Are the Glock 19X and Glock 45 the same size?

Both the Glock 19X and Glock 45 feature a Glock 17-sized grip and a Glock 19-sized slide. This configuration offers a longer grip for better control and a more compact slide for concealability.

Does the Glock 19X have front slide serrations?

On some early models, the Glock 19X does not feature front slide serrations. While the Glock 45 typically includes front slide serrations, especially on newer production runs, this can vary.

What is the origin of the Glock 45?

The Glock 45 was developed as part of Glock's submission for the US military's Modular Handgun System trials. It essentially combines a Glock 19 slide with a Glock 17 frame, a design that was well-received but ultimately lost the contract to Sig Sauer.

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