Glock 43X MOS vs. Regular: Key Differences in Performance and Features

Many gun enthusiasts often weigh the Glock 43X against the Glock 43X MOS. These two models may seem similar at first glance, but the differences in design and functionality are noteworthy.

The Glock 43X MOS offers enhanced versatility due to its modular optic system, making it an excellent option for those seeking improved sighting options. Meanwhile, the standard Glock 43X remains a solid choice thanks to its lighter weight and more streamlined design, which makes it ideal for concealed carry.

Whether one is more suitable depends on personal preference and specific needs. Choosing between the Glock 43X and the Glock 43X MOS involves considering factors such as optic and accessory compatibility, performance characteristics, and how you plan to carry it.

Key Takeaways

• The Glock 43X MOS is versatile with its modular optic system.
• The standard Glock 43X is lighter and easier to conceal.
• Choosing between them depends on individual needs and preferences.

Design and Specifications

The Glock 43X and Glock 43X MOS are compact, subcompact pistols designed for concealed carry. While they share many similarities, several key differences set them apart.

Dimensions and Size

The Glock 43X is 6.50 inches long, 5.04 inches tall, 1.06 inches wide, and weighs 18.7 oz unloaded, 23.07 oz loaded. Meanwhile, the Glock 43X MOS has almost identical dimensions with a slight variation in width and weight. The 43X MOS is 1.10 inches wide, 18.55 oz unloaded, and 22.96 oz loaded. This subtle difference in width and weight can slightly affect how each gun feels when carried and shot. Both are designed to be easily concealable and comfortable for everyday carry.

Barrel and Slide Features

Both models feature a barrel length of 3.41 inches. The standard Glock 43X uses the famous Glock Marksman Barrel (GMB), known for its enhanced accuracy and durability. The 43X MOS includes the GMB but has additional front slide serrations for improved manipulation. The MOS version is designed to be compatible with various red dot sights, allowing users to customize their optics preferences. Both pistols have a reversible slide-stop lever to suit left- and right-handed shooters, ensuring ease of use and functionality.

Frame and Grip

The Glock 43X and 43X MOS frame is made of durable polymer, offering a lightweight yet sturdy build. The slimline frame of both models ensures a comfortable grip for shooters with different hand sizes. The grip texture provides a firm hold even in adverse conditions. The 43X MOS frame includes a takedown tab, making disassembly straightforward for simple maintenance. Both models feature a 10-round magazine capacity, balancing capacity, and concealability. While the basic grip design is similar, the MOS variant's additional features enhance its versatility for various shooting preferences.

Performance Characteristics

The Glock 43X MOS and the regular Glock 43X have notable differences in their performance characteristics. These differences impact trigger mechanics, accuracy, range, reliability, and maintenance.

Trigger Mechanics

The trigger on the Glock 43X and the Glock 43X MOS is identical. Both models feature a standard Glock Safe Action trigger system. The trigger pull weight is around 5.4 lbs, which is common for Glock pistols.

The trigger travel and reset are short and crisp, aiding in rapid follow-up shots. Enthusiasts might appreciate the tactile reset, ensuring they can quickly prepare for the next shot. Aftermarket triggers can be installed on both models for those seeking a customized feel.

Accuracy and Range

The Glock 43X MOS stands out in terms of accuracy due to its ability to mount optics. The MOS (Modular Optic System) allows users to attach a variety of red dot sights, enhancing target acquisition and precision. This feature can be especially beneficial for longer-range engagements.

The regular Glock 43X, while still highly accurate for a subcompact pistol, does not offer this level of customization. Both models are chambered in 9mm, providing a manageable recoil. The sight radius remains the same for both, contributing to consistent shot placement.

Reliability and Maintenance

Reliability is a hallmark of the Glock brand, and the 43X and 43X MOS uphold this reputation. They function flawlessly under various conditions and handling. This makes them suitable for everyday carry and self-defense.

Maintenance is straightforward for both models. They can be easily disassembled without the need for specialized tools. Cleaning and lubrication are simple, ensuring the firearm remains in optimal working condition. The addition of optics on the MOS model is relatively simple, though it may require extra care to keep the sight and mount clean.

Optic and Accessory Compatibility

The Glock 43X MOS offers enhanced flexibility with its modular optic system, allowing various optics and attachments to be used. This gives the user more customization options than the regular Glock 43X.

Modular Optic System (MOS)

The Glock 43X MOS features a Modular Optic System that allows users to mount different red dot sights easily. This is a significant upgrade from the regular Glock 43X, which does not support such optics without additional modifications.

The MOS configuration includes a factory-cut slide that accepts famous micro red dot sights. This benefits those who prefer red dot sights for improved accuracy and quicker target acquisition.

Sights and Optics

The Glock 43X MOS comes optics-ready, accommodating various aftermarket red dot sights. Some popular options include:

• Trijicon RMR: Known for durability and reliability, it is ideal for self-defense and competition shooting.
• Holosun 507K: Offers multiple reticle options and long battery life.
• Shield RMSc: Compact and lightweight, perfect for concealed carry.
• Vortex Venom: Affordable and user-friendly.

In contrast, the standard Glock 43X requires additional modifications for compatibility with these sights.

Rails and Attachments

The Glock 43X MOS also features an accessory rail on the frame. This rail is compatible with various attachments, such as lights and lasers, enhancing its versatility for different scenarios.

Popular accessories include:

• Weapon Lights: For better visibility in low light conditions.
• Lasers: For improved accuracy and quick target acquisition.

The standard Glock 43X lacks this rail, limiting its ability to mount these valuable accessories. This makes the MOS version more flexible for users seeking to customize their firearm with lighting and laser options.

Concealed Carry Considerations

When evaluating the Glock 43X MOS against the standard 43X, key factors include carrying comfort, concealability, and holster options. These points are crucial for anyone choosing a concealed-carry firearm.

Carrying Comfort and Concealability

The Glock 43X weighs 18.7 oz unloaded and is 1.06 inches wide. The 43X MOS is slightly heavier at 18.55 oz and broader at 1.10 inches. These differences are minor but can affect daily comfort.

For many users, the full-height grip surface of both models ensures a solid hold, making it easier to manage recoil. The slight added width of the MOS may be noticeable, particularly when carrying inside the waistband (IWB) 

Despite the added features of the MOS, both models remain slim and easy to conceal under everyday clothing. The 43X MOS also supports accessories like optics, making it more versatile but slightly bulkier.

Frequently Asked Questions

This section covers the key differences, compatibility with red dot sights, holster options, size comparisons with the Glock 43, and recommended accessories for the Glock 43X MOS variant.

What are the primary differences in features between the Glock 43X and the 43X MOS?

The Glock 43X MOS is slightly wider and heavier than the regular 43X model. The MOS version has a width of 1.10 inches and weighs 18.55 oz (unloaded), while the regular 43X has a width of 1.06 inches and weighs 18.7 oz (unloaded). The 43X MOS also includes the MOS (Modular Optic System) for mounting optics.

Can the Glock 43X MOS accommodate a red dot sight, and if so, which models are compatible?

Thanks to its MOS system, the Glock 43X MOS can accommodate a red dot sight. Commonly compatible models include the Shield RMSc, Holosun 507K, and Sig Sauer Romeo Zero. These sights enhance target acquisition and accuracy.

What holster options are available for the Glock 43X MOS, and do they differ from regular Glock 43X holsters?

Holsters for the Glock 43X MOS are designed to fit the added optic system. Some brands offer compatible holsters, including Alien Gear, Crossbreed, and Tulster. These holsters ensure the extra width and height of the MOS are accommodated, while regular 43X holsters may need to be fixed.

How does the Glock 43X MOS compare to the Glock 43 in size, handling, and performance?

The Glock 43X is larger than the Glock 43, with an overall length of 6.5 inches and a height of 5.04 inches. The Glock 43, on the other hand, is more compact, with an overall length of 6.26 inches and a height of 4.25 inches. The 43X MOS handles slightly differently due to its additional optic system.

What specific accessories and upgrades can be added to the Glock 43X MOS?

Accessories for the Glock 43X MOS include various red dot sights, extended magazines, upgraded triggers, and custom grips. The Shield RMSc sight, Talon Grips, and Overwatch Precision triggers are popular upgrades. Each accessory enhances the firearm's functionality and performance.

In what scenarios might a shooter prefer the standard Glock 43X over the 43X MOS variant?

A shooter might prefer the standard Glock 43X if they prioritize a slightly slimmer profile and lighter weight. It’s ideal for those who do not need a red dot sight and prefer a more minimalist, straightforward concealed carry option.