The Diamondback DB9 is a compact, lightweight semi-automatic handgun built for concealed carry and personal defense. The Civil Defense Blue finish gives it a distinctive look, and at just 11 ounces it carries all day without much notice. 
 

Key Specifications 

• Manufacturer: Diamondback Firearms 
• Model: DB9 
• Type: Semi-Auto Handgun 
• Caliber: 9mm 
• Barrel Length: 3 inches 
• Capacity: 6 + 1 rounds (includes one magazine) 
• Weight: 11 oz. 
• Finish Color: Civil Defense Blue 
• Condition: New in Box 
   

Features 

The DB9 uses a zero-energy striker fired action that minimizes pre-travel resistance, which keeps the trigger pull smooth and helps with faster follow-up shots. Sights are windage-adjustable, so you can dial in your point of aim without tools. The polymer frame keeps weight down without sacrificing durability, a straightforward trade-off that works well for a carry gun. 
 
The grip is on the small side, which suits the intended use but can feel less secure for shooters with larger hands. Recoil is snappier than with heavier 9mm pistols, which is expected at 11 ounces, something to factor in when evaluating it for extended range sessions versus carry duty.

Owners of the DB9 in Civil Defense Blue tend to agree on a few things. The weight is the headline: 11 ounces is genuinely light for a 9mm, and most people who carry it daily notice the difference compared to heavier options. The price is another consistent positive. It sits in a budget-friendly range that makes it accessible without feeling cheap in hand.

The Civil Defense Blue finish gets its share of compliments for standing out from the standard black pistol crowd. On performance, most users report adequate reliability and acceptable accuracy at self-defense distances.

The critiques are predictable for a gun this light. Recoil is snappy, and shooters who spend time at the range note that follow-up shots take more conscious effort than with heavier pistols. The grip is narrow, which works for concealment but leaves something to be desired for larger hands. Capacity at 6+1 is on the low end compared to similarly-sized competitors. A handful of early reviews flagged quality control concerns on specific units, though many of those same owners reported the issues resolved after a break-in period.