Quick Look
The Glock 19 Gen 4 MOS, introduced in 2010, is an evolution of the popular Glock 19 pistol designed for enhanced modularity and customization. Its modular optics system allows easy mounting of red dot sights, catering to modern handgun shooters. This model remains a top choice among law enforcement, self-defense, and concealed carry users due to its reliability and versatility.
Why It's a Top Choice
- Consistent Glock reliability and durability
- Modular Optics System for easy red dot installation
- Improved grip texture and interchangeable backstraps
- Compatible with aftermarket sights and accessories
- Compact size well-suited for concealed carry
Key Variants
Glock 19 Gen 5
The latest standard Gen 5 upgrade adds enhanced accuracy and ambidextrous controls for broader appeal.
Glock 19 Gen 4
Predecessor to MOS, focusing on improved grip and recoil features.
Glock 19 MOS
Original MOS model with optics cut but without Gen 4 grip upgrades.
Competitor Comparison Table
| Feature | glock 19 gen 4 mos | sig p320 | smith & wesson m&p 9 |
|---|---|---|---|
| MSRP | $600 - $700 | $500 - $600 | $550 - $650 |
| Capacity/Size | 15+1 rounds, 4.02 in barrel | 17+1 rounds, 4.7 in barrel | 17+1 rounds, 4 in barrel |
| Weight | 23.65 oz | 29 oz | 24 oz |
| Optics-ready | Yes (MOS cut) | Yes (factory-ready) | Yes (selected models) |
| Trigger Type | Safe Action | Striker-fired | Striker-fired |
| Notable Pro | Extensive aftermarket support | Modular grip design | Ergonomic grip options |
| Notable Con | Grip texture may not suit all | Slightly heavier than Glock | Occasional trigger reset complaints |
Best Use Cases
- Concealed carry and personal defense
- Law enforcement duty pistol
- Competition shooting and training
- Home defense
- Plinking and range practice
FAQs
Can I install aftermarket red dot sights on the Glock 19 Gen 4 MOS?
Yes. The MOS cut accepts popular Micro and Mini red dot sights from brands like Trijicon and Vortex without gunsmithing.
What is the difference between Glock 19 Gen 4 MOS and Gen 5 models?
Gen 5 adds a dehorned slide, flared magwell, and ambidextrous controls while Gen 4 MOS focuses on optics readiness plus grip modularity.
How does the grip modularity on Gen 4 improve shooting?
Interchangeable backstraps customize grip size, improving comfort and control across different hand sizes.
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