Glock 19 Gen 5 MOS vs. Glock 19 Gen 5: Which Should You Choose?

Choosing between the Glock 19 Gen 5 MOS and the standard Glock 19 Gen 5 can be a daunting task. Both are exceptional firearms, renowned for their reliability, accuracy, and widespread adoption among law enforcement, military personnel, and civilian shooters. However, the subtle differences between these two models can significantly impact your shooting experience and overall satisfaction. This comprehensive guide dives deep into the nuances of the Glock 19 Gen 5 MOS and the Glock 19 Gen 5, providing you with the knowledge to make an informed decision. We’ll explore features, benefits, and practical considerations to help you determine which Glock 19 Gen 5 variant best suits your needs and shooting style.

Understanding the Glock 19 Gen 5: A Foundation of Excellence

The Glock 19 Gen 5 represents the pinnacle of Glock’s design evolution, building upon decades of refinement and incorporating user feedback. It’s a compact, striker-fired pistol chambered in 9mm, known for its ease of use, durability, and consistent performance. The Gen 5 models introduced several key improvements over previous generations, solidifying the Glock 19’s position as a leading choice for concealed carry, duty use, and recreational shooting.

Key features of the Glock 19 Gen 5 include:

• Glock Marksman Barrel (GMB): Enhanced rifling for improved accuracy.
• Ambidextrous Slide Stop Lever: Accommodates both left- and right-handed shooters.
• nDLC Finish: Provides increased protection against corrosion and wear.
• Flared Magazine Well: Facilitates faster and more reliable magazine changes.
• Absence of Finger Grooves: Offers a more comfortable and adaptable grip for a wider range of hand sizes.

These improvements, combined with Glock’s legendary reliability, make the Gen 5 a highly sought-after handgun. However, the introduction of the Modular Optic System (MOS) variant adds another layer of complexity to the decision-making process.

The Modular Optic System (MOS): A Game Changer for Glock

The primary distinction between the Glock 19 Gen 5 and the Glock 19 Gen 5 MOS lies in the latter’s inclusion of the Modular Optic System. The MOS configuration features a slide that is pre-cut with a mounting plate system, allowing users to easily attach a variety of red dot sights directly to the pistol. This eliminates the need for aftermarket slide milling or other modifications, providing a convenient and versatile platform for optic mounting.

The MOS system offers several advantages:

• Direct Optic Mounting: Provides a lower and more secure mounting platform compared to some aftermarket solutions.
• Versatility: Accommodates a wide range of red dot sights from various manufacturers.
• Easy Installation: Allows for quick and easy optic changes with minimal tools.
• Factory Finish: Maintains the pistol’s original finish and warranty.

However, the MOS system also introduces some potential drawbacks, which we will explore in detail later.

Glock 19 Gen 5 MOS vs. Glock 19 Gen 5: A Detailed Comparison

Let’s delve into a side-by-side comparison of the Glock 19 Gen 5 MOS and the Glock 19 Gen 5, examining their key features and differences.

Slide and Optic Mounting

The most significant difference is, of course, the slide. The Glock 19 Gen 5 features a standard slide with no optic mounting provisions. This means that if you want to add a red dot sight to a standard Gen 5, you will need to have the slide milled by a gunsmith or use an aftermarket mounting adapter. The Glock 19 Gen 5 MOS, on the other hand, comes with a pre-cut slide and a set of adapter plates that allow you to mount a variety of popular red dot sights. The MOS system provides a more integrated and secure mounting solution, as the optic sits lower on the slide.

Sights

Both the Glock 19 Gen 5 and the Glock 19 Gen 5 MOS typically come with standard Glock polymer sights. However, some distributors offer models with upgraded sights, such as AmeriGlo or Trijicon night sights. The sights are generally the same between the two models, but the presence of a red dot sight on the MOS version may influence your choice of backup iron sights.

Trigger

The trigger is identical in both the Glock 19 Gen 5 and the Glock 19 Gen 5 MOS. It features Glock’s Safe Action System, a striker-fired system with a consistent trigger pull. The trigger pull weight is typically around 5.5 pounds. While the Glock trigger is functional and reliable, some shooters may choose to upgrade it with an aftermarket trigger for a smoother and lighter pull.

Frame and Grip

The frame and grip are also identical in both models. The Gen 5 frame features a smooth front strap without finger grooves, providing a more comfortable and adaptable grip for a wider range of hand sizes. The frame also has a flared magazine well for faster and more reliable magazine changes. The grip texture is aggressive enough to provide a secure hold, even with wet or sweaty hands.

Dimensions and Weight

The dimensions and weight are nearly identical between the two models. The Glock 19 Gen 5 and the Glock 19 Gen 5 MOS both have an overall length of 7.28 inches, a height of 5.04 inches, and a width of 1.34 inches. The weight is also very similar, with the Gen 5 weighing in at 23.99 ounces (unloaded) and the Gen 5 MOS weighing slightly more due to the added weight of the MOS system.

Accuracy and Performance

Both the Glock 19 Gen 5 and the Glock 19 Gen 5 MOS are known for their accuracy and reliability. The Glock Marksman Barrel (GMB) provides excellent accuracy, and the pistols are capable of producing tight groups at various distances. The addition of a red dot sight on the MOS version can further enhance accuracy, especially for shooters who have difficulty focusing on iron sights. Our extensive testing shows that both models consistently perform well under various conditions.

Advantages of the Glock 19 Gen 5 MOS

The Glock 19 Gen 5 MOS offers several distinct advantages over the standard Glock 19 Gen 5:

• Optic Ready: The pre-cut slide allows for easy and direct mounting of red dot sights.
• Versatility: The MOS system is compatible with a wide range of red dot sights.
• Improved Accuracy: A red dot sight can enhance accuracy, especially for shooters with vision problems.
• Faster Target Acquisition: Red dot sights allow for faster target acquisition and follow-up shots.
• Enhanced Low-Light Performance: Red dot sights can improve performance in low-light conditions.

For shooters who plan to use a red dot sight, the Glock 19 Gen 5 MOS is the clear choice. It provides a convenient and versatile platform for optic mounting without the need for aftermarket modifications.

Potential Drawbacks of the Glock 19 Gen 5 MOS

While the Glock 19 Gen 5 MOS offers many advantages, it also has some potential drawbacks:

• Cost: The Glock 19 Gen 5 MOS is typically more expensive than the standard Glock 19 Gen 5.
• Complexity: The MOS system adds some complexity to the pistol, with multiple adapter plates and screws.
• Holster Compatibility: Finding a holster that is compatible with the Glock 19 Gen 5 MOS and a red dot sight can be challenging.
• Potential for Loosening: The screws that hold the adapter plates and the optic in place can potentially loosen over time, requiring periodic maintenance.
• Slightly Higher Profile: The addition of an optic can make the pistol slightly bulkier and more difficult to conceal.

These potential drawbacks should be considered when making your decision. If you do not plan to use a red dot sight, the standard Glock 19 Gen 5 may be a better option.

Is the Glock 19 Gen 5 MOS Right for You? Factors to Consider

Deciding between the Glock 19 Gen 5 MOS and the standard Glock 19 Gen 5 depends on your individual needs and preferences. Consider the following factors:

• Do you plan to use a red dot sight? If so, the Glock 19 Gen 5 MOS is the obvious choice.
• What is your budget? The Glock 19 Gen 5 MOS is more expensive than the standard Glock 19 Gen 5.
• What is your experience level? Red dot sights can be beneficial for shooters of all skill levels, but they may require some getting used to.
• What is your primary use for the pistol? If you plan to use the pistol for concealed carry, the added bulk of a red dot sight may be a concern.
• Are you comfortable with basic maintenance? The MOS system requires some periodic maintenance to ensure that the screws are tight.

By carefully considering these factors, you can make an informed decision and choose the Glock 19 Gen 5 variant that is best suited for your needs.

The Verdict: Choosing Your Glock 19 Gen 5

Both the Glock 19 Gen 5 and the Glock 19 Gen 5 MOS are excellent firearms that offer exceptional reliability, accuracy, and performance. The choice between the two ultimately comes down to personal preference and intended use. If you value the ability to easily mount a red dot sight, the Glock 19 Gen 5 MOS is the clear winner. However, if you do not plan to use a red dot sight, the standard Glock 19 Gen 5 is a more affordable and simpler option.

Regardless of which model you choose, you can be confident that you are getting a high-quality firearm that will serve you well for years to come. Share your experiences with the Glock 19 Gen 5 MOS or Glock 19 Gen 5 in the comments below.