Glock 19 Mos Slide

Caroline Mae

2 min read

·

01-01-2025

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The Glock 19, a perennial favorite among both law enforcement and civilians, has seen numerous upgrades and variations over the years. One significant development is the introduction of the Modular Optic System (MOS) slide. This feature allows for the easy mounting of miniature red dot sights (RDS), significantly enhancing the pistol's accuracy and speed of target acquisition. This article will delve into the details of the Glock 19 MOS slide.

What is the Glock 19 MOS?

The MOS designation stands for Modular Optic System. This isn't just a different slide; it's a redesigned slide that incorporates pre-cut mounting plates for various popular miniature red dot sights. This eliminates the need for extensive gunsmithing or custom milling to add an optic, simplifying the process and making it more accessible to a wider range of users.

Key Features of the MOS Slide:

• Pre-cut Mounting Plates: The MOS slide comes with multiple interchangeable mounting plates, typically including those compatible with popular RDS brands like Trijicon, Leupold, and Docter. This versatility allows shooters to choose the optic that best suits their needs and preferences.

• Enhanced Accuracy: The addition of a red dot sight drastically improves accuracy, especially in close-quarters and low-light conditions. The RDS provides a clear, bright aiming point, faster target acquisition, and reduced reliance on iron sights.

• Improved Speed: The ability to acquire a target quickly is crucial in self-defense situations. The MOS system allows for a streamlined aiming process, leading to quicker and more precise shots.

• Ease of Installation: Installing an RDS on a MOS slide is considerably easier than on a standard Glock 19 slide. The pre-cut plates ensure a precise fit and straightforward installation, minimizing the risk of damage or misalignment.

• Retention of Iron Sights: Despite adding a red dot sight, the Glock 19 MOS retains its standard iron sights, providing a backup aiming system in case of RDS failure or battery depletion. This redundancy is a critical safety feature.

Considerations When Choosing an MOS Slide:

While the MOS system offers significant advantages, there are a few factors to consider:

• Cost: The MOS slide is typically more expensive than a standard Glock 19 slide. This added cost encompasses the engineering, machining, and the inclusion of multiple mounting plates.

• Added Weight: The addition of an RDS and its mounting plate will increase the overall weight of the pistol. While this might be negligible for some, others may find it affects their handling and comfort.

• Co-witnessing: Understanding co-witnessing (the alignment of iron sights with the red dot) is important. Some shooters prefer a lower 1/3 co-witness, while others prefer absolute co-witness. This preference often depends on individual shooting style and optic choice.

Conclusion:

The Glock 19 MOS slide is a valuable upgrade for shooters who want to enhance their pistol's capabilities. The ease of adding a red dot sight, along with the retention of iron sights, makes it a versatile and reliable option. However, potential buyers should carefully consider the cost and added weight before making a purchase. Ultimately, the decision to upgrade to an MOS slide is a personal one, dependent on individual needs and shooting preferences.