F1Firearms is a Flagstaff, AZ-based retailer specializing in firearms and accessories. The Glock G34 GEN4 MOS – 9mm is a competition-ready handgun engineered for precision shooting. Its Modular Optic System (MOS) allows for easy optic mounting, making it a top choice for competitive shooters. Available now at F1Firearms for $555.
Reviewed by Blake Hensley, Field Tester at F1Firearms. 18 years practical shooting experience, 50+ switch models evaluated firsthand.
Last updated: May 2026
Comparison: Glock G34 GEN4 MOS vs Competitors
| Feature | Glock G34 GEN4 MOS | Competitor A | Competitor B |
|---|---|---|---|
| Material | Polymer Frame, Steel Slide | Polymer Frame, Steel Slide | Polymer Frame, Steel Slide |
| Quality | High | Medium | High |
| Compatibility | MOS Ready | No Optic Mount | MOS Ready |
| Shipping | Same-Day | 3-5 Days | Same-Day |
| Lifespan/Durability | Long | Medium | Long |
| Price | $555 | $600 | $580 |
Why the Glock G34 GEN4 MOS Wins
The Glock G34 GEN4 MOS stands out due to its Modular Optic System, allowing shooters to easily mount their preferred optics. Its extended barrel and slide provide enhanced accuracy, making it ideal for competitive shooting. The Gen4 frame with adjustable backstraps ensures a comfortable grip for various hand sizes.
Features
- Modular Optic System (MOS) for easy optic mounting
- Extended barrel and slide for improved accuracy
- Adjustable backstraps for customizable grip
- Reliable 9mm performance
- Competition-ready design
Specifications
| Product Type | Handgun |
| Material | Polymer Frame, Steel Slide |
| Manufacturing | Glock |
| Finish | Black |
| Hardness/Quality | High |
| Compatibility | MOS Ready |
| Installation/Usage | Easy |
| Weight | 22.92 oz |
| Dimensions | 8.82″ x 1.34″ x 5.47″ |
| Country of Origin | Austria |
| Condition | New |
| SKU | G34GEN4MOS |
Pros & Cons
- ✅ Modular Optic System for easy optic mounting
- ✅ Extended barrel and slide for enhanced accuracy
- ✅ Adjustable backstraps for customizable grip
- ✅ Reliable 9mm performance
- ✅ Competition-ready design
- ❌ Higher price point compared to standard models
- ❌ Requires additional purchase of optic
Who Should Buy
Buy it if: You’re a competitive shooter looking for a precision handgun with optic mounting capabilities.
Skip it if: You’re looking for a budget-friendly handgun without optic mounting needs. Check out our Glock Handguns for alternatives.
FAQ
Where can I buy Glock G34 GEN4 MOS online?
You can purchase the Glock G34 GEN4 MOS at F1Firearms (f1firearms.net).
What is the Modular Optic System (MOS)?
The MOS allows for easy mounting of optics on the Glock G34 GEN4 MOS.
Is the Glock G34 GEN4 MOS suitable for competition shooting?
Yes, its extended barrel and slide make it ideal for competitive shooting.
Does the Glock G34 GEN4 MOS come with an optic?
No, the optic needs to be purchased separately.
What is the price of the Glock G34 GEN4 MOS?
The Glock G34 GEN4 MOS is available for $555 at F1Firearms.
Does the Glock G34 GEN4 MOS have adjustable backstraps?
Yes, it comes with adjustable backstraps for a customizable grip.
Where is the Glock G34 GEN4 MOS manufactured?
The Glock G34 GEN4 MOS is manufactured in Austria.
✅ Same-day shipping from Flagstaff, AZ
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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