Glock 34 Gen 4 MOS for Sale

If you’re looking for a Glock 34 Gen 4 MOS for sale, you’re choosing a competition-ready 9mm pistol engineered for precision, control, and adaptability. The Glock 34 Gen 4 MOS combines a long-slide design with modular optics capability, making it a top choice for competitive shooting, range performance, and duty applications that demand enhanced accuracy.

Product Description | Specs Glock

The Glock 34 Gen 4 MOS for sale features Glock’s Safe Action® striker-fired system along with the Modular Optic System (MOS), allowing shooters to easily mount compatible red dot optics. With its extended barrel, longer sight radius, and Gen 4 ergonomic improvements, this model is designed for superior accuracy and faster target acquisition.

Glock 34 Gen 4 MOS Specifications:

• Caliber: 9×19mm
• Capacity: 17+1 rounds
• Barrel Length: 5.31 inches
• Overall Length: 8.82 inches
• Weight (Unloaded): Approx. 25.9 oz
• Action: Striker-fired
• Frame Size: Full-size long slide
• Finish: Gas nitride treated slide
• Optics Ready: MOS configuration

Anyone searching for a Glock 34 Gen 4 MOS for sale will appreciate its extended sight radius, optics-ready design, and competition-focused performance.

Features

The Glock 34 Gen 4 MOS for sale includes performance-enhancing features built for precision shooting:

• Modular Optic System (MOS) for mounting reflex sights
• Extended barrel and slide for improved accuracy
• Modular Backstrap System for customizable grip size
• Dual recoil spring assembly for reduced felt recoil
• Reversible magazine release for left- or right-handed use
• Lightened trigger pull for competition performance
• Enhanced grip texture for improved control

These features make the Glock 34 Gen 4 MOS an excellent option for competitive shooters and precision-focused users.

What the Glock 34 Gen 4 MOS Is Made Of

The Glock 34 Gen 4 MOS for sale is built using durable, lightweight materials designed for consistent high-performance use:

• Frame: High-strength polymer
• Slide: Steel with corrosion-resistant finish
• Barrel: Cold hammer-forged steel
• Internal Parts: Hardened steel components

This construction supports long-term reliability and dependable performance under demanding shooting conditions.

Glock 34 Gen 3 vs Gen 4 MOS

When comparing a Glock 34 Gen 4 MOS for sale to the Gen 3 version, several ergonomic and functional upgrades stand out.

Gen 3:

• Fixed grip size
• Single recoil spring
• No factory optics mounting option

Gen 4 MOS:

• Modular Backstrap System
• Dual recoil spring assembly
• MOS optics-ready slide
• Improved grip texture
• Reversible magazine release

The Gen 4 MOS provides improved recoil management, customizable ergonomics, and modern optics compatibility.

Glock 34 Gen 4 MOS vs Standard Gen 4

Buyers often compare the MOS model to the standard Gen 4 Glock 34.

Standard Gen 4:

• Traditional slide configuration
• Iron sights only

Gen 4 MOS Advantages:

• Optics-ready slide system
• Adapter plates for multiple red dot footprints
• Faster target acquisition potential

The MOS version offers greater flexibility for shooters who prefer optic-equipped pistols.

Compatibility

The Glock 34 Gen 4 MOS for sale is compatible with many Glock accessories, with a few considerations:

• Magazines: Compatible with standard Glock 9mm double-stack magazines
• Holsters: Fits most Glock 34 holsters
• Sights: Compatible with standard Glock sight cuts (optic mounting replaces rear plate)
• Optics: Requires MOS adapter plates for mounting
• Parts: Some components are generation-specific

Always confirm compatibility before purchasing aftermarket components.

Glock 34 Gen 4 MOS Pros and Cons

Pros

• Competition-ready long-slide design
• Optics-ready MOS configuration
• Extended sight radius for improved accuracy
• Customizable grip ergonomics
• Reduced recoil and improved control
• Proven Glock reliability

Cons

• Larger size may limit concealed carry use
• Optics plates required for mounting red dots
• Longer slide may feel front-heavy for some users

FAQs

Is the Glock 34 Gen 4 MOS good for competition shooting?
Yes, its long barrel, improved trigger characteristics, and optics-ready design make it ideal for competitive shooting.

What does MOS mean on the Glock 34 Gen 4?
MOS stands for Modular Optic System, which allows easy mounting of compatible reflex sights.

Is the Glock 34 Gen 4 MOS suitable for beginners?
Yes, though its size is larger than compact models, the reduced recoil and improved accuracy can benefit new shooters.

Can you use iron sights with the MOS system?
Yes, iron sights remain functional when an optic is not installed.

DISCLAIMER

Duty Pistols Inc 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.