Glock 20C Gen 3 Complete OEM Slide

Upgrade or restore your Glock 20C with a complete OEM Gen 3 compensated slide designed for enhanced control and performance. Featuring factory porting to reduce muzzle rise, this slide delivers smoother follow-up shots, improved recoil management, and reliable function for range, duty, or defensive use.

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

Glock engineers the Glock 20C Gen 3 complete slide to exact factory specifications, ensuring seamless compatibility with Gen 3 frames and internal components. The compensated (ported) design vents gases upward to help reduce recoil and muzzle flip, improving shooting control—especially with the powerful 10mm Auto cartridge.

Precision-machined from high-strength steel and finished with Glock’s durable factory coating, this slide provides excellent wear resistance, corrosion protection, and consistent cycling with factory and quality aftermarket ammunition.

What’s Included For Glock 20C Gen 3 Complete OEM Slide

A complete OEM slide arrives fully assembled and ready to install. It typically includes:

• Glock 20C Gen 3 OEM compensated slide
• OEM striker (firing pin) assembly
• OEM striker safety and spring
• OEM extractor
• OEM extractor depressor plunger and spring
• OEM slide cover plate
• OEM channel liner (installed)
• OEM sights (polymer or steel, supplier dependent)

Specifications

• Model: Glock 20C Gen 3 Slide
• Manufacturer: Glock (OEM)
• Material: Heat-treated steel
• Finish: Glock factory finish
• Caliber: 10mm Auto
• Compatibility: Glock 20C Gen 3 frames and components
• Serrations: Rear serrations
• Compensation: Factory ported (C model)
• Optics Cut: No (standard OEM slide)
• Sights: OEM Glock pattern (varies by package)

How to Install a Glock 20C Gen 3 Slide

Install the Slide

• Confirm the firearm is unloaded and clear
• Remove the existing slide from the frame
• Install or verify the compensated barrel and recoil spring assembly
• Align the slide with the frame rails and guide it into place

Function Check

• Rack the slide to confirm smooth operation
• Perform a dry-function check to verify proper trigger reset
• Insert an empty magazine and confirm slide lock

(Follow Glock armorer guidelines during installation.)

How To Disable a Glock 20C Gen 3 Slide

• Remove the slide assembly from the frame
• Store the slide and frame separately
• Remove and secure all magazines
• Use a cable or trigger lock through the frame
• Store ammunition in a separate locked location

For permanent compliance or modification, consult a licensed gunsmith or FFL.

Compatibility

• Fits: Glock 20C Gen 3 frames
• Barrels: Glock 20C compensated barrels (ported)
• Recoil System: Gen 3 recoil spring assembly
• Sights: Glock OEM-pattern sights

Note: Designed specifically for Gen 3 models. Do not mix with Gen 4 or Gen 5 components without verified compatibility.

What’s the Glock 20C Gen 3 Slide Made Of?

Glock machines this OEM slide from high-strength steel and applies a durable factory finish to resist corrosion and wear. The integrated porting works with a compatible barrel to vent gases upward, reducing muzzle rise and improving overall control.

Customization Options

• Sights: OEM polymer, steel, night sights, or fiber optics
• Barrels: Compatible Glock 20C ported barrels
• Internal Parts: OEM or high-quality aftermarket components
• Finish Mods: Cerakote or refinishing services

Note: Modifications may affect reliability or warranty coverage. Always test after changes.

FAQs

Q: Is this a complete slide?
Yes. It comes fully assembled with internal components and is ready to install.

Q: What does the “C” model mean?
“C” stands for compensated, meaning the slide and barrel are ported to reduce muzzle rise.

Q: Will this work with a standard (non-ported) barrel?
For proper function and performance, use a compatible ported barrel designed for the 20C.

Q: Will this fit other Glock generations?
No. It is designed specifically for Glock 20C Gen 3 frames.

Q: Does this maintain factory reliability?
Yes. When paired with correct components, it delivers dependable factory-level performance.

DISCLAIMER

Factoryoemsupply.com provides aftermarket and compatible parts 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 related marks. We use “GLOCK” only to identify parts compatible with Glock pistols.