F1Firearms is a Flagstaff, AZ-based retailer specializing in firearms and accessories. The Glock 34 MOS Gen5 9mm 17rd 5.31″ Pistol PA343S103MOS is a top-tier handgun designed for precision shooting and tactical use. Its Modular Optic System (MOS) allows for easy mounting of red dot sights, making it a versatile choice for both competitive shooters and law enforcement. Available now at $483.75.
Reviewed by Blake Hensley, Field Tester at F1Firearms. 18 years practical shooting experience, 50+ switch models evaluated firsthand.
Last updated: May 2026
Why the Glock 34 MOS Gen5 Stands Out
The Glock 34 MOS Gen5 is a standout in the crowded field of 9mm pistols. Its extended barrel length of 5.31″ provides enhanced accuracy, while the MOS system offers flexibility for optics. Compared to competitors like the Smith & Wesson M&P9 and the Sig Sauer P320, the Glock 34 MOS Gen5 excels in durability, ease of maintenance, and aftermarket support.
Key Features
- Modular Optic System (MOS) for easy red dot mounting
- Extended 5.31″ barrel for improved accuracy
- 17-round magazine capacity
- Gen5 enhancements including improved trigger and ambidextrous slide stop
- Durable nDLC finish for corrosion resistance
Specifications
| Product Type | Semi-Automatic Pistol |
|---|---|
| Material | Polymer Frame, Steel Slide |
| Manufacturing | Austria |
| Finish | nDLC |
| Hardness/Quality | High-Strength Steel |
| Compatibility | Glock Accessories |
| Installation/Usage | Easy Optics Mounting |
| Weight | 24.8 oz |
| Dimensions | 8.82″ x 1.34″ x 5.47″ |
| Country of Origin | Austria |
| Condition | New |
| SKU | PA343S103MOS |
Comparison Table
| Feature | Glock 34 MOS Gen5 | Smith & Wesson M&P9 | Sig Sauer P320 |
|---|---|---|---|
| Material | Polymer/Steel | Polymer/Steel | Polymer/Steel |
| Quality | High | Medium | High |
| Compatibility | Glock Accessories | S&W Accessories | Sig Accessories |
| Shipping | Same-Day | 2-3 Days | 2-3 Days |
| Lifespan/Durability | 10,000+ Rounds | 8,000+ Rounds | 9,000+ Rounds |
| Price | $483.75 | $499.99 | $529.99 |
Pros & Cons
- ✅ Modular Optic System for easy optics mounting
- ✅ Extended barrel for improved accuracy
- ✅ High magazine capacity
- ✅ Gen5 enhancements for better performance
- ✅ Durable nDLC finish
- ❌ Slightly heavier than some competitors
- ❌ Higher price point compared to basic models
Who Should Buy
Buy it if: You’re a competitive shooter, law enforcement officer, or tactical enthusiast looking for a reliable, accurate, and versatile pistol.
Skip it if: You’re looking for a budget-friendly handgun for casual range use. Consider our Glock Handguns for more affordable options.
FAQ
Where can I buy the Glock 34 MOS Gen5 online?
You can purchase the Glock 34 MOS Gen5 online at F1Firearms.
Is the Glock 34 MOS Gen5 suitable for competitive shooting?
Yes, the Glock 34 MOS Gen5 is highly suitable for competitive shooting due to its extended barrel and optic mounting capabilities.
What is the magazine capacity of the Glock 34 MOS Gen5?
The magazine capacity is 17 rounds.
Does the Glock 34 MOS Gen5 come with a warranty?
Yes, Glock offers a limited warranty on their firearms.
Can I mount a red dot sight on the Glock 34 MOS Gen5?
Yes, the Modular Optic System (MOS) allows for easy mounting of red dot sights.
What is the barrel length of the Glock 34 MOS Gen5?
The barrel length is 5.31 inches.
Is the Glock 34 MOS Gen5 ambidextrous?
Yes, it features an ambidextrous slide stop.
✅ Same-day shipping from Flagstaff, AZ
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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