Glock 20C Gen 3 OEM Slide

The Glock 20C Gen 3 OEM Slide delivers factory-compensated power designed for the hard-hitting 10mm Auto cartridge. Glock engineered this slide with integrated ports in both the slide and barrel to reduce recoil and muzzle rise—resulting in smoother, faster follow-up shots and superior control during rapid fire.

Product Description | Specs for Glock 20C Gen 3 OEM Slide

Glock machines the 20C Gen 3 slide from high-strength steel and applies a Tenifer finish that resists corrosion, scratches, and wear. Two compensator ports on the top of the slide and barrel direct gas upward to help tame the sharp recoil of the 10mm Auto, providing better stability and accuracy. This OEM slide brings you factory reliability with competition-ready performance.

What’s Included for Complete OEM Slide:

• Glock 20C Gen 3 complete slide
• Factory-ported 10mm Auto barrel
• Recoil spring assembly (RSA)
• Extractor
• Firing pin safety
• Depressor plunger assembly
• Firing pin assembly
• Rear slide plate
• Channel liner
• Fixed factory sights

What’s Included for Stripped OEM Slide:

• Glock 20C Gen 3 stripped slide
• Channel liner
• OEM fixed sights

Note: The stripped slide does not include the barrel, RSA, or internal components.

Specifications

• Model: Glock 20C Gen 3 OEM Slide
• Finish: Tenifer (matte black)
• Length: 8.07 inches
• Width: 1.12 inches
• Weight (without barrel/RSA): Approx. 7.52 oz
• Optic Ready: No
• Caliber: 10mm Auto

How to Disassemble a Glock 20C Gen 3 OEM Slide

1. Ensure the firearm is unloaded and remove the magazine.
2. Pull the slide slightly rearward and hold it while pulling down the takedown levers.
3. Release the slide forward off the frame.
4. Remove the recoil spring assembly.
5. Lift out the barrel.

Your slide is now ready for cleaning, inspection, or upgrades.

How to Install a Glock Slide

1. Insert the barrel into the slide.
2. Place 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 into place.
5. Perform a function check to confirm proper operation.

Compatibility with Other Models

Glock designed the 20C Gen 3 slide specifically for Gen 3 Glock 20 frames chambered in 10mm Auto. This slide is not compatible with Gen 4 or Gen 5 frames or with other calibers due to internal differences and dimensions.

What Is the Glock 20C Gen 3 OEM Slide Made Of?

Glock builds this slide from high-strength steel and finishes it with its proprietary Tenifer treatment. This finish offers exceptional hardness, corrosion resistance, and a non-reflective surface. The compensator ports give it added function for high-powered shooting while maintaining the rugged reliability Glock is known for.

Customization Options

• Sights: Upgrade to fiber optics or night sights for improved target acquisition.
• Finish: Customize the slide with Cerakote or laser engraving.
• Barrel: Match with aftermarket threaded or fluted barrels for added function and style.

FAQs

Q: Does the slide come with internal components?
The complete slide includes all internal parts; the stripped version does not.

Q: Is this slide optics-ready?
No, this slide does not feature an optic cut.

Q: Can I use this slide with Gen 4 or Gen 5 frames?
No, this slide only fits Gen 3 Glock 20 frames.

Q: Why choose a compensated slide?
The factory ports reduce muzzle rise and felt recoil, improving control for faster and more accurate follow-up shots.

Q: Can I use this slide with other calibers?
No, it’s designed specifically for the 10mm Auto cartridge.

DISCLAIMER

GlockSlide.us provides aftermarket and compatible slides and components for GLOCK pistols. We operate independently and do not represent, endorse or have any connection with GLOCK, Inc. or GLOCK Ges.m.b.H.

GLOCK, Inc. and GLOCK Ges.m.b.H own the trademark “GLOCK” and other related marks. We mention “GLOCK” only to identify parts and products that fit or work with GLOCK pistols.