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Glock 19 Gen 5 MOS vs. Glock 19 Gen 5: Which is Right for You?

The Glock 19 is arguably one of the most popular and versatile handguns ever produced. Its compact size, reliable performance, and manageable recoil make it a favorite among law enforcement, concealed carriers, and recreational shooters alike. The fifth generation (Gen 5) Glock 19 continues this legacy, offering improvements over previous generations. However, within the Gen 5 lineup, there are variations, most notably the standard Glock 19 Gen 5 and the Glock 19 Gen 5 MOS (Modular Optic System). This article will delve into the key differences between these two models to help you determine which one best suits your needs.

Understanding the Glock 19 Gen 5

Before we dissect the differences, let’s establish a baseline understanding of what the Glock 19 Gen 5 brings to the table. The Gen 5 represents a significant evolution from previous Glock generations. Key features include:

Glock Marksman Barrel (GMB): Improved rifling for enhanced accuracy.
Ambidextrous Slide Stop Lever: Allows for easier operation for both left- and right-handed shooters.
nDLC Finish: A more durable and corrosion-resistant finish on the slide and barrel.
Flared Magazine Well: Facilitates faster and easier magazine changes.
Removal of Finger Grooves: Provides a more comfortable and adaptable grip for a wider range of hand sizes.
Glock Safe Action System: Glock’s renowned internal safety system, ensuring the pistol only fires when the trigger is pulled.

These features are common to both the standard Glock 19 Gen 5 and the Glock 19 Gen 5 MOS. Now, let’s explore the crucial distinction.

The Key Difference: The Modular Optic System (MOS)

The primary and most significant difference between the two models is the presence of the Modular Optic System (MOS) on the Glock 19 Gen 5 MOS. This system allows the user to mount a variety of red dot sights directly to the slide of the pistol without the need for custom gunsmithing. The MOS configuration includes a milled-out portion on the slide, covered by a removable plate. When the plate is removed, the user can install one of several adapter plates (included with the MOS model) to accommodate different red dot sight footprints (e.g., Trijicon RMR, Leupold DeltaPoint Pro, etc.).

The standard Glock 19 Gen 5 does not have this milled slide and therefore cannot readily accept red dot sights. Mounting an optic on a standard Gen 5 Glock 19 would require aftermarket slide milling, a more permanent and potentially costly solution.

Advantages of the Glock 19 Gen 5 MOS

Optics Ready: The most obvious advantage is the ability to easily mount a red dot sight. Red dot sights can improve target acquisition speed and accuracy, particularly for shooters with aging eyes or those who prefer a different sighting method.
Versatility: The MOS system offers versatility, allowing users to experiment with different red dot sights and find the one that best suits their needs and preferences.
Factory Solution: The MOS is a factory-installed system, ensuring proper fit and function. This eliminates the potential for issues that can arise from aftermarket modifications.
Resale Value: A Glock 19 Gen 5 MOS may hold its value better than a standard Gen 5 if you decide to sell it in the future, as the demand for optics-ready pistols is growing.

Disadvantages of the Glock 19 Gen 5 MOS

Slightly Higher Cost: The Glock 19 Gen 5 MOS typically costs more than the standard Gen 5 model due to the added milling and adapter plates.
Slightly Higher Slide: The milling process and adapter plate add a very slight amount of height to the slide, which may be a concern for some concealed carriers. However, the difference is usually negligible.
Potential for Plate Loosening: While rare, there is a small chance that the adapter plates could loosen over time with repeated firing. Regular checking and tightening of the screws are recommended.

Advantages of the Standard Glock 19 Gen 5

Lower Cost: The standard Glock 19 Gen 5 is generally more affordable than the MOS version.
Simplicity: Some shooters prefer the simplicity of iron sights and have no interest in mounting a red dot sight.
Slightly Lower Profile: Without the milled slide and adapter plate, the standard Gen 5 has a slightly lower profile, which may be preferred by some for concealed carry.
No Additional Maintenance: There are no adapter plates to check or screws to tighten.

Disadvantages of the Standard Glock 19 Gen 5

Not Optics Ready: The most significant disadvantage is the inability to easily mount a red dot sight. If you decide you want to use an optic in the future, you’ll need to invest in aftermarket slide milling.
Limited Future Options: If you anticipate wanting to try a red dot sight at some point, the standard Gen 5 limits your options and requires a more permanent modification.

Choosing the Right Glock 19 Gen 5 for You

The decision between the Glock 19 Gen 5 MOS and the standard Glock 19 Gen 5 ultimately depends on your individual needs, preferences, and shooting style. Consider the following factors:

Do you want to use a red dot sight? If the answer is yes, the MOS model is the clear choice.
What is your budget? The standard Gen 5 is more affordable.
Do you plan to conceal carry? Both models are suitable for concealed carry, but the standard Gen 5 has a slightly lower profile.
Are you comfortable with basic maintenance? The MOS model requires occasional checking and tightening of the adapter plate screws.
Do you value versatility? The MOS system offers more versatility in terms of optic options.

For the Shooter Considering Optics: If you are even remotely considering using a red dot sight in the future, the Glock 19 Gen 5 MOS is the better option. The upfront cost is higher, but it saves you the hassle and expense of aftermarket slide milling later on. It provides the flexibility to experiment with different optics and potentially improve your shooting performance.

For the Traditionalist: If you are a traditionalist who prefers iron sights and has no interest in red dot sights, the standard Glock 19 Gen 5 is a perfectly capable and reliable handgun. It’s a more affordable option and offers a simpler, more streamlined design.

Beyond the MOS: Other Considerations

Regardless of which model you choose, remember that proper training, consistent practice, and adherence to safe gun handling practices are essential for responsible gun ownership. Consider taking a firearms safety course and practicing regularly at a shooting range.

Also, consider the accessories you might want to add to your Glock 19 Gen 5, such as [See also: Aftermarket Glock Triggers], [See also: Best Glock Holsters for Concealed Carry], and [See also: Upgrading Your Glock Sights]. These accessories can further enhance the performance and usability of your pistol.

Final Thoughts

The Glock 19 Gen 5 and the Glock 19 Gen 5 MOS are both excellent handguns. The choice between them comes down to your individual needs and preferences. If you value the ability to easily mount a red dot sight, the MOS model is the way to go. If you prefer the simplicity of iron sights and want to save some money, the standard Gen 5 is a great choice. Either way, you’ll be getting a reliable, accurate, and versatile handgun that is sure to serve you well for years to come. Both the Glock 19 Gen 5 and the Glock 19 Gen 5 MOS represent the pinnacle of Glock’s engineering and design, offering shooters a dependable and adaptable platform for self-defense, competition, or recreational shooting. Ultimately, the best Glock 19 Gen 5 for you is the one that best fits your individual requirements and shooting style. Therefore, thoroughly evaluate your needs, consider the advantages and disadvantages of each model, and make an informed decision that aligns with your goals. Remember to always prioritize safety and responsible gun ownership. Consider factors like your budget and what you plan to do with your gun.