Glock 19 Gen 5 MOS OEM Slide 

The Glock 19 Gen 5 MOS OEM Slide is a factory-original upper designed to deliver dependable performance and exceptional reliability. Glock builds this slide specifically for Gen 5 pistols, ensuring a precise fit and smooth operation. Because it features the MOS (Modular Optic System) cut, it allows shooters to mount popular red-dot optics while still using standard or suppressor-height iron sights.

Product Description | Glock 19 Gen 5 MOS OEM Slide Specs

Glock machines this slide from high-strength steel to maximize durability and service life. Additionally, its nDLC finish increases hardness, reduces friction, and protects against corrosion. As a result, the slide maintains dependable function in concealed carry roles, duty environments, and custom builds.

What’s Included – Complete OEM Slide

• Glock 19 Gen 5 MOS complete upper
• Barrel
• Recoil spring assembly
• Extractor
• Firing pin safety
• Depressor plunger assembly
• Firing pin assembly
• MOS cover plate
• Rear slide plate
• Channel liner
• Factory Glock sights

What’s Included – Stripped OEM Slide

• Glock 19 Gen 5 MOS stripped slide
• MOS cover plate
• Channel liner
• OEM Glock sights

Note: The stripped version does not include the barrel, RSA, or internal upper parts.

Specifications

• Model: Glock 19 Gen 5 MOS OEM Slide
• Finish: nDLC (Black)
• Length: 6.85 inches
• Width: 1.00 inch
• Weight: Approx. 6.17 oz (without barrel or RSA)
• Optic Ready: Yes — factory MOS optic cut

How to Disassemble the Glock 19 Gen 5 MOS Slide

Begin by ensuring the firearm is fully unloaded—remove the magazine and inspect the chamber. Next, pull the slide slightly rearward and press down both takedown levers. After guiding the slide forward, remove it from the frame. Then remove the recoil spring assembly and lift the barrel free. These steps allow you to safely clean or upgrade the slide.

How to Reinstall the Glock Slide

Start by inserting the barrel back into the slide. After that, seat the recoil spring assembly against the barrel lug. Then align the slide with the frame rails and pull it fully to the rear before releasing it. Finally, perform a quick function test to confirm proper operation after reassembly.

Compatibility with Glock 19 and PSA Dagger

This slide fits Glock 19 Gen 5 frames directly. However, it does not fit Gen 3/4 Glock frames or the PSA Dagger without modification. Because Glock updated the barrel lug geometry and slide design in Gen 5, proper compatibility ensures safe and reliable function.

What Is the Glock 19 Gen 5 MOS OEM Slide Made Of?

Glock builds this slide from robust steel to ensure long-term strength and durability. Furthermore, the nDLC coating enhances hardness and corrosion resistance, keeping the slide running smoothly in harsh conditions. The Gen 5 platform also improves cycling, extraction, and overall reliability for defensive, recreational, and professional use.

Customization & Modifications

The MOS cut gives shooters a wide range of optic options. Additionally, you can upgrade the slide with night sights, fiber-optic sights, or suppressor-height irons. Shooters can also apply Cerakote, add serrations, or engrave the slide for a personalized appearance. These customization paths allow you to tailor your build to your specific needs.

FAQs

Q: Will a Gen 5 MOS slide fit on a Gen 4 frame?
No. Gen 5 slide geometry differs and is not compatible with Gen 4 frames.

Q: What optics fit the MOS system?
The slide includes MOS plates that support popular footprints such as RMR, Holosun, and Docter patterns.

Q: Does this slide include the MOS plate kit?
Most OEM slides include the standard MOS cover plate only. Some packages include MOS adapter plates; availability varies.

Q: Does the slide come with sights installed?
Yes. Both the complete and stripped versions include factory Glock sights.

Q: How often should I clean the slide?
Clean and lubricate after each use or at least monthly if stored for extended periods.

DISCLAIMER

FactoryGlockSlides.com sells aftermarket and compatible components for Glock pistols. We operate independently and are not affiliated with, endorsed by, or connected to GLOCK, Inc. or GLOCK Ges.m.b.H.

Best Red-Dot Sights for Glock MOS — Quick Breakdown

Trijicon RMR Type 2

• Ultra-durable design
• 3.25 MOA crisp dot
• Long battery life
• Ideal co-witness with MOS plates

Holosun 507C X2

• Multi-reticle (dot, circle, combo)
• Solar failsafe power
• 7075-T6 aluminum body
• High performance at lower cost

Leupold DeltaPoint Pro

• Large viewing window
• Motion-activated on/off
• Lightweight build
• Great for fast target work

Aimpoint ACRO P-2

• Fully enclosed emitter
• 50,000-hour runtime
• Duty-grade durability
• Excellent in harsh conditions

SIG Romeo2

• Modular open/enclosed design
• Bright, crisp reticle
• Clear glass quality
• Versatile for carry or range use