Glock 31 Gen 4 Complete OEM Slide

Upgrade or replace your Glock 31 Gen 4 with a complete OEM slide built for factory-level reliability, durability, and performance. Glock engineers each Gen 4 slide to strict standards, ensuring precise fitment, smooth cycling, and dependable operation for duty, range, or defensive use.

Product Description | Specs for Glock 31 Gen 4 Complete OEM Slide

Glock manufactures the Glock 31 Gen 4 complete slide to exact factory specifications and designs it for seamless compatibility with Gen 4 frames and internals. The company precision-machines the slide from high-strength steel and applies its durable factory finish to promote consistent lockup, smooth operation, and reliable performance with factory and quality aftermarket ammunition.

This complete OEM slide is ideal for full replacements, slide swaps, or restoring your pistol to original factory condition.

What’s Included For Complete Glock 31 Gen 4 Slide

A complete OEM slide arrives fully assembled and ready to install on a compatible Glock 31 Gen 4 frame. It typically includes:

• Glock 31 Gen 4 OEM 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)
• Barrel (.357 SIG)
• Recoil spring assembly (Gen 4)

Specifications

• Model: Glock 31 Gen 4 Slide
• Manufacturer: Glock (OEM)
• Material: Heat-treated steel
• Finish: Glock factory finish
• Caliber: .357 SIG
• Compatibility: Glock 31 Gen 4 frames and components
• Serrations: Standard rear serrations
• Optics Cut: No (standard OEM slide)
• Sights: OEM Glock pattern

How to Install a Glock 31 Gen 4 Slide

Install the Slide

• Confirm the pistol is unloaded and clear
• Remove the existing slide from the frame
• Align the complete OEM slide with the frame rails
• Slide it onto the frame until it locks in place

Function Check

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

(Follow Glock armorer guidelines when installing or swapping components.)

How To Disable a Glock 31 Gen 4 Slide

• Remove the slide assembly and store it separately
• Remove and store all magazines separately
• Install a cable or trigger lock through the frame or magwell
• Store ammunition separately
• Secure all components in a locked container or safe

For permanent disabling or legal compliance, consult a licensed gunsmith or FFL.

Compatibility

• Fits: Glock 31 Gen 4 frames
• Barrels: Included OEM .357 SIG barrel
• Recoil System: Gen 4 recoil spring assembly
• Sights: Glock OEM-pattern sights
• Gen Mix: Designed for Gen 4 pistols only; do not mix with other generations without verified compatibility

What’s the Glock 31 Gen 4 Slide Made Of?

Glock manufactures OEM slides from high-strength steel and protects them with a durable factory finish to resist corrosion and wear. Precision machining ensures proper breech geometry, extractor fit, and striker channel alignment for consistent reliability and long service life.

Customization Options

• Sights: OEM polymer, steel, night sights, or fiber optics
• Barrels: Aftermarket .357 SIG barrels
• Internal Parts: OEM or high-quality aftermarket upgrades
• Finish Mods: Cerakote or refinishing services

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

FAQs

Q: Is this a genuine Glock OEM slide?
Yes. Glock manufactures this slide to factory specifications.

Q: Is the slide complete?
Yes. This is a complete slide with internals, barrel, and recoil spring assembly.

Q: Will this fit other Glock generations?
No. Glock designed this slide specifically for Gen 4 frames.

Q: Can I add an optic to this slide?
This standard OEM slide does not include an optics cut. You must mill it or choose an MOS version.

Q: Does this maintain factory reliability?
Yes. When paired with compatible Gen 4 components, it delivers factory-level reliability and 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 other related marks. We mention “GLOCK” only to identify parts and products that fit or work with Glock pistols.