Glock 19 Gen 4 MOS OEM Slide

Upgrade your pistol with the Glock 19 Gen 4 MOS OEM Slide, a factory-built, optic-ready slide designed for reliability, adaptability, and modern performance. Glock engineered this slide to integrate seamlessly with red dot optics while preserving the trusted Gen 4 system.

The MOS (Modular Optic System) cut lets you mount popular micro red dot sights quickly and securely using adapter plates—no custom milling required. This design improves target acquisition speed and overall shooting efficiency.

Glock machines this slide from high-strength hardened steel and finishes it with a corrosion-resistant coating for long-lasting durability. Rear serrations provide a firm grip, allowing smooth and confident slide manipulation. The Gen 4 configuration supports the dual recoil spring system, enhancing recoil control and extending service life.

📦 What’s Included (Complete OEM Slide)

• Fully assembled Glock 19 Gen 4 MOS slide
• OEM 9mm barrel
• Dual recoil spring assembly (RSA)
• Extractor
• Firing pin assembly with safety
• Depressor plunger assembly
• Rear slide plate
• Channel liner
• Factory front and rear sights
• MOS adapter plate set with mounting screws

📦 What’s Included (Stripped Slide)

• Glock 19 Gen 4 MOS stripped slide
• Channel liner
• Factory front and rear sights
• MOS adapter plate set with screws

Note: Stripped slides do not include the barrel, recoil spring assembly, or internal components.

⚙️ Specifications

• Model: Glock 19 Gen 4 MOS OEM Slide
• Material: Hardened steel
• Finish: Corrosion-resistant black coating
• Slide Length: 7.28 inches (185 mm)
• Slide Width: Approx. 1.00 inch (25.5 mm)
• Weight (Stripped): Approx. 6.0–6.5 oz
• Caliber: 9mm Luger
• Optic Ready: Yes (MOS system with adapter plates)
• Serrations: Rear

🛠️ How to Disassemble

1. Ensure the firearm is unloaded and remove the magazine.
2. Pull the slide slightly rearward and depress both takedown levers.
3. Release the slide forward and remove it from the frame.
4. Remove the recoil spring assembly.
5. Lift the barrel out of the slide.

🔩 How to Install

1. Insert the barrel into the slide.
2. Install the recoil spring assembly onto the barrel lug.
3. Align the slide with the frame rails.
4. Pull the slide fully rearward and release it to lock.
5. Mount your optic using the correct MOS plate and screws, then perform a full function check.

🔗 Compatibility

This slide fits Glock 19 Gen 4 frames and Gen 4-compatible components. It does not fit Gen 3 or Gen 5 frames due to design differences.

🧱 Materials & Finish

Glock uses hardened steel and applies a protective finish that resists corrosion and wear, ensuring long-term reliability in various conditions.

🎯 Customization Options

• Optics: Mount red dots from Trijicon, Holosun, Leupold, and more
• Sights: Upgrade to night sights, fiber optics, or suppressor-height sights
• Finish: Apply Cerakote or custom coatings
• Engraving: Add custom slide cuts or engravings

❓ FAQs

Q: Does the complete slide include MOS plates?
A: Yes, it includes adapter plates and mounting hardware.

Q: Can I mount any red dot optic?
A: The MOS system supports most major footprints; always verify compatibility.

Q: Is this compatible with Gen 3 or Gen 5 frames?
A: No, it is designed specifically for Gen 4.

Q: What’s the benefit of MOS?
A: It allows easy optic installation without slide milling.

Q: Does the stripped slide include sights?
A: Yes, factory sights are typically included.