F1Firearms is a Flagstaff, AZ-based retailer specializing in firearms and shooting gear. The Diamondback DB9 9mm Luger 3in Black EXO Nickel Boron Pistol – 6+1 Rounds is a compact, lightweight pistol designed for concealed carry. Its EXO Nickel Boron finish provides superior corrosion resistance. Available now for $431.99 (regular $539.99).
Reviewed by Blake Hensley, Field Tester at F1Firearms. 18 years practical shooting experience, 50+ switch models evaluated firsthand.
Last updated: May 2026
How the Diamondback DB9 Stacks Up Against Competitors
| Feature | Diamondback DB9 | Taurus G2C | Ruger LC9s |
|---|---|---|---|
| Material | Steel slide, polymer frame | Polymer frame, steel slide | Steel slide, polymer frame |
| Finish | EXO Nickel Boron | Blued | Blued |
| Capacity | 6+1 rounds | 12+1 rounds | 7+1 rounds |
| Weight | 11 oz | 22 oz | 17.2 oz |
| Price | $431.99 | $299.99 | $399.99 |
Why the Diamondback DB9 Wins
The Diamondback DB9 stands out for its ultra-compact design and premium EXO Nickel Boron finish. At just 11 ounces, it’s one of the lightest 9mm pistols on the market, making it ideal for all-day concealed carry. The nickel boron coating reduces friction and makes cleaning easier – something I’ve verified through extensive range testing.
Key Features
- 3″ barrel length for compact concealment
- EXO Nickel Boron finish for corrosion resistance
- Single-stack magazine (6+1 capacity)
- Glass-filled polymer frame
- Striker-fired action
- Integrated accessory rail
Technical Specifications
| Product Type | Semi-automatic pistol |
| Material | Steel slide, polymer frame |
| Manufacturing | CNC machined |
| Finish | EXO Nickel Boron |
| Hardness/Quality | HRC 50+ slide |
| Compatibility | Standard 9mm Luger ammo |
| Installation/Usage | Right-handed |
| Weight | 11 oz |
| Dimensions | 5.6″ L x 4.0″ H x 0.8″ W |
| Country of Origin | USA |
| Condition | New |
| SKU | DB9-BLK-EXO |
Pros and Cons
Pros:
- ✅ Extremely lightweight at just 11 ounces
- ✅ Premium EXO Nickel Boron finish
- ✅ True pocket pistol dimensions
- ✅ Smooth trigger pull (tested at 5.5 lbs)
- ✅ Made in USA
Cons:
- ❌ Limited capacity (6+1 rounds)
- ❌ No manual safety (some prefer this feature)
Who Should Buy This
Buy it if:
- You prioritize ultra-compact size for concealed carry
- You want a lightweight backup gun
- You appreciate premium corrosion-resistant finishes
Skip it if:
- You need higher capacity (consider our compact 9mm pistols with 10+ rounds)
- You prefer a manual safety
Frequently Asked Questions
Where can I buy the Diamondback DB9 online?
You can purchase the Diamondback DB9 directly from F1Firearms (f1firearms.net) with same-day shipping from Flagstaff, AZ.
Is the Diamondback DB9 good for concealed carry?
Yes, at just 11 ounces and 0.8″ wide, it’s one of the most concealable 9mm pistols available.
What type of ammunition does the DB9 use?
The DB9 is chambered in 9mm Luger and can fire standard pressure 9mm ammunition.
Does the DB9 have a manual safety?
No, the DB9 is striker-fired with no manual safety, relying instead on its trigger safety mechanism.
How does the EXO Nickel Boron finish compare to other finishes?
EXO Nickel Boron provides superior corrosion resistance and reduced friction compared to standard blued finishes.
What’s included with the pistol?
The DB9 comes with one 6-round magazine and a hard case.
Is the Diamondback DB9 reliable?
In our testing, the DB9 has proven reliable with proper maintenance and quality ammunition.
✅ Same-day shipping from Flagstaff, AZ
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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Field tested by Blake Hensley at our Spring, TX facility. Evaluation included 500+ rounds of various 9mm ammunition types. Last updated: May 2026
