Glock 19X

The Crossover Configuration

The 19X’s combination of a G17 frame with a G19 slide is deliberate and practical. The full-size G17 frame provides a complete grip for all hand sizes and a 17-round magazine capacity, while the shorter G19 slide reduces overall length slightly and balances the pistol differently than either parent model. The result is a pistol that handles like a full-size gun with slightly less barrel than the G17. The 19X ships only in coyote tan, with the frame and slide in matching finish. For shooters who prefer a full grip with all fingers on the frame but find the G17’s slide length unnecessary, the 19X offers an intermediate option that Glock doesn’t otherwise produce.

Factory Equipment

The 19X is among the most fully equipped factory Glocks available. It ships with Glock Night Sights (tritium front and rear), an ambidextrous slide stop lever, a flared magwell for faster reloads, and a Glock Marksman Barrel for improved accuracy. It comes with three 17-round magazines rather than the standard two. The nDLC finish on the barrel provides improved corrosion resistance. For buyers who would otherwise add night sights, a flared magwell, and an ambi slide stop to a standard Glock, the 19X delivers those features from the factory at a price that often comes out ahead of buying a standard model and upgrading.

Military Competition Background

The 19X was developed specifically for the U.S. Army’s MHS (Modular Handgun System) competition that ultimately selected the Sig Sauer P320 as the M17. Glock’s submission featured the same crossover configuration as the 19X. While it didn’t win the Army contract, Glock released the design to the civilian market where it found immediate popularity. The 19X is not an MOS model—there is no factory optics cut, which is its most notable limitation compared to the G17 MOS. Aftermarket optics cuts are available from third-party milling services for 19X owners who want a red dot.

Who Should Buy the 19X

The 19X suits shooters who want the full-grip ergonomics of the G17 with a slightly more compact slide, who prefer the coyote tan aesthetic, or who value the factory-included night sights and flared magwell without aftermarket work. It’s particularly popular as a duty and home-defense pistol where the full grip and 17-round capacity are priorities. The lack of a factory MOS cut is the primary drawback for optics-focused buyers—those who want a factory red-dot-ready Glock should look at the G17 Gen 5 MOS or G45 MOS instead.

19X vs. G45

The Glock 45 uses the same crossover configuration as the 19X—G17 frame, G19 slide—but in standard black with a factory MOS optics cut option. The G45 MOS is the direct answer to the 19X’s optics limitation. If a red dot is in your plans, the G45 MOS is the better choice. If you prefer the coyote tan finish, factory night sights, and the flared magwell from the box, the 19X is the right call. Both are excellent pistols—the choice comes down to color preference and optics plans.

Frequently Asked Questions: Glock 19X

What is the Glock 19X?
The Glock 19X is the result of Glock’s entry in the US Army Modular Handgun System competition — it combines the compact Glock 19 slide (shorter than the G17) with the full-size Glock 17 frame for a higher-capacity grip. The result is a 19+1 capacity 9mm pistol with a more concealable slide profile than the G17 but the full grip of a duty pistol. The 19X was released commercially after the Army selected the Sig P320 (M17/M18), and has become one of Glock’s most popular models.

What is the difference between the Glock 19X and Glock 45?
The G19X and G45 are mechanically very similar — both combine the G19 slide with the G17 frame. The G19X has a tan/FDE Cerakote finish, a nPVD-coated barrel, and ships with three 17-round magazines and one 17-round magazine with a coyote tan magazine. The G45 has a black finish and ships with two standard 17-round magazines. The G45 also has front slide serrations that the G19X lacks. For most buyers, the choice is finish preference.

What is the Glock 19X MOS?
The Glock 19X MOS (Modular Optic System) adds a factory-milled optics cut to the 19X slide, allowing direct mounting of popular red dot sights without an adapter plate. The MOS version is increasingly the recommended choice for buyers who anticipate adding a red dot now or in the future.

Does the Glock 19X use G17 magazines?
Yes — the G19X accepts standard Glock 17 17-round magazines as its flush-fit magazine, as well as G19 15-round magazines and extended 33-round magazines. The full-size G17 frame makes 17-round magazines flush with the grip rather than protruding.

See Also: Glock Firearms • Glock 19 • Glock 17 • Glock 45 • 9mm Pistols