Glock 34 Gen 5 MOS OEM Slide

The Glock 34 Gen 5 MOS OEM Slide delivers long‑slide precision and factory MOS optic capability for competition, training, and duty performance. Built specifically for the Glock 34 Gen 5 platform, it offers improved sight radius, reduced muzzle flip, and accurate shot placement while maintaining Glock’s proven reliability.

Product Description | Specs for Glock 34 Gen 5 MOS OEM Slide

Glock machines the 34 Gen 5 MOS slide from high-strength steel and applies the tough nDLC finish for corrosion and wear resistance. Because the slide includes the Modular Optic System, it allows shooters to mount a range of red‑dot optics. Its extended length increases stability and accuracy, making it ideal for competition-ready setups.

What’s Included for Complete OEM MOS Slide:

• Glock 34 Gen 5 MOS complete slide
• MOS cover plate
• MOS optic plate set
• Factory 9mm barrel (Gen 5)
• Recoil spring assembly
• Extractor
• Firing pin safety
• Depressor plunger assembly
• Firing pin assembly
• Rear slide plate
• Channel liner
• Fixed factory sights

Stripped OEM MOS Slide:

• Glock 34 Gen 5 MOS stripped slide
• MOS cover plate
• OEM fixed sights
• Channel liner

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

Specifications

• Model: Glock 34 Gen 5 MOS OEM Slide
• Finish: Black nDLC
• Length: 8.15 inches (long slide)
• Width: 1.00 inch
• Weight (without barrel/RSA): Approx. 8.10 oz
• Optic Ready: Yes — Modular Optic System
• Compensated Ports: No
• Generation: Gen 5 only

How to Disassemble a Glock 34 Gen 5 MOS OEM Slide

Ensure the firearm is unloaded and remove the magazine.

Pull the slide slightly rearward and hold it while pulling down the takedown levers.

Release the slide forward off the frame.

Remove the recoil spring assembly.

Lift out the longer 34‑length barrel.

Your slide is now disassembled for cleaning, optic mounting, or upgrades.

How to Install a Glock Slide

Insert the barrel into the slide.

Place the recoil spring assembly onto the barrel lug.

Align the slide with the frame rails.

Pull the slide fully rearward and release it to lock into place.

Perform a function check to confirm proper operation.

Compatibility with Other Models

The Glock 34 Gen 5 MOS OEM Slide is designed for Glock 34 Gen 5 frames only.
It is not compatible with:

• Gen 3 frames
• Gen 4 frames
• Glock 17, 19, or 45
• Polymer80 full-size frames

Because of redesigned Gen 5 internals, barrel geometry, and MOS plate alignment, cross-compatibility is not supported.

What Are Glock 34 Gen 5 MOS Slides Made Of?

Glock machines this long-slide MOS upper from high‑strength steel for durability and consistency. The nDLC finish provides excellent resistance to moisture, friction, and carbon buildup. Its extended design improves sight radius, recoil control, and red‑dot stability, making it a top choice for competitive shooting.

Customization Options

• Optics: Attach red dots like RMR, Holosun, Trijicon SRO, and more.
• Sights: Add suppressor-height sights for co‑witnessing with optics.
• Finish: Cerakote or DLC refinishing for custom color builds.
• Engravings: Add custom markings or competition identifiers.

FAQS

Q: Does the slide include internal components?
The complete slide includes all internal parts, while the stripped version does not.

Q: Is this slide optics-ready?
Yes. The MOS system supports multiple red‑dot platforms using the included plate set.

Q: Can I mount competition sights?
Yes. The Glock 34 Gen 5 MOS accepts fiber‑optic, night sights, and tall co‑witness sights.

Q: Is this slide compatible with Gen 3 or Gen 4 frames?
No. It fits Gen 5 Glock 34 frames only.

Q: What is the benefit of the 34‑length slide?
It provides reduced muzzle rise, a longer sight radius, and improved target tracking.

DISCLAIMER

Factoryglockslides.com 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 all related marks. We mention “GLOCK” only to identify parts and products that fit or work with GLOCK pistols.

Best Optics for Glock 34 Gen 5 MOS

The Glock 34 Gen 5 MOS accepts multiple red‑dot optics through its MOS plate system. Shooters often choose optics that offer fast acquisition, wide viewing windows, and rugged construction.

Top recommended options:
• Trijicon RMR Type 2 – proven durability
• Trijicon SRO – large competition window
• Holosun 507C – cost‑effective, feature rich
• Leupold DeltaPoint Pro – excellent clarity

Glock 34 Gen 5 MOS Competition Advantages

The long slide offers superior accuracy for competitive shooters. Its extended barrel helps reduce muzzle rise and maintain faster follow‑up shots.

Major benefits:
• Longer sight radius
• Flatter shooting characteristics
• MOS cut for red‑dot precision
• More stable tracking during recoil