Glock 43X MOS OEM Slide

Glock designed the 43X MOS OEM Slide to offer concealed carriers modern performance in a compact, optics-ready platform. With its factory MOS cut and slimline frame compatibility, this slide gives you enhanced customization without sacrificing Glock’s trusted reliability.

Product Description | Specs for Glock 43X MOS OEM Slide

Glock manufactures the 43X MOS slide from high-strength steel and finishes it with a black nDLC coating for durability and corrosion resistance. The factory-milled MOS cut allows direct mounting of Shield RMSc, Holosun 407K/507K, and other micro red dot sights. Front serrations offer better slide manipulation, especially during press checks.

This slide is part of Glock’s Slimline series and pairs perfectly with the Glock 43X MOS frame for a streamlined, optics-ready carry option.

What’s Included for Complete OEM Slide:

• Glock 43X MOS slide
• Glock Marksman Barrel (GMB)
• Recoil Spring Assembly (RSA)
• Firing pin assembly
• Extractor
• Firing pin safety
• Depressor plunger assembly
• Rear slide plate
• Channel liner
• Fixed Glock polymer sights

What’s Included for Stripped OEM Slide:

• Glock 43X MOS slide (stripped)
• Channel liner
• OEM fixed sights

Note: The stripped slide does not include the barrel, recoil spring assembly, or internal parts.

Specifications

• Model: Glock 43X MOS OEM Slide
• Material: Steel
• Finish: Black nDLC
• Length: 6.06 inches
• Width: 0.87 inches
• Weight (without barrel/RSA): Approx. 6.17 oz
• Optic Cut: Yes – factory MOS
• Compatible Optics: Shield RMSc, Holosun 407K/507K, SIG RomeoZero
• Caliber: 9mm Luger

How to Disassemble the Glock 43X MOS Slide

1. Unload the firearm and remove the magazine.
2. Pull the slide slightly back and hold it while pulling down both takedown levers.
3. Let the slide move forward and off the frame.
4. Remove the recoil spring assembly.
5. Lift the barrel out of the slide.

How to Install the Slide

1. Insert the barrel into the slide.
2. Fit the recoil spring assembly over the barrel lug.
3. Align the slide with the frame rails.
4. Pull the slide back fully and release it to lock in place.
5. Perform a function check to ensure proper operation.

Compatibility

Glock made the 43X MOS slide specifically for the Glock 43X MOS frame. It also works with the Glock 48 MOS. It will not fit standard 43X or 48 frames unless they have matching MOS mounting systems.

What are Glock 43x OEM Slides Made of ?

Glock uses high-strength steel to build the 43X MOS slide. The nDLC finish improves durability, resists corrosion, and reduces glare. Glock engineered this finish to perform in harsh environments.

Customization Options

• Optics: Mount micro red dots like the RMSc, 407K, or RomeoZero
• Sights: Upgrade to aftermarket iron sights or night sights
• Finish: Apply Cerakote for a custom look
• Engraving: Add laser engraving for personalization

FAQs

Q: Is this slide optics-ready?
Yes, it features a factory-milled MOS cut for direct optic mounting.

Q: Does the complete slide include internals?
Yes, the complete version includes all upper internal parts and sights.

Q: Will this fit a non-MOS Glock 43X frame?
No, it’s designed for MOS frames. You must mill or modify a non-MOS frame to fit optics.

Q: What optics fit the MOS cut?
Shield RMSc, Holosun 407K/507K, and SIG RomeoZero all fit the factory MOS footprint.

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.