The Diamondback DB-10 Carbon is a semi-automatic .308 Winchester rifle with a 16-inch barrel, OD Green and Black finish, and a 20-round capacity. It weighs 8.4 lbs. 
 

Key Specifications 

• Model: DB-10 Carbon 
• Caliber: .308 Win 
• Action: Semi-Automatic 
• Barrel Length: 16 inches 
• Capacity: 20 rounds 
• Weight: 8.4 lbs 
• Finish: OD Green / Black 
   

Features 

 
The 16-inch barrel is 4150 CrMoV steel with a Black Nitride finish. The mid-length gas system with a 1:10 twist rate cycles reliably across a range of .308 bullet weights. Upper and lower receivers are forged 7075 T6 aluminum. 
 
The 15-inch M-Lok handguard accommodates optics, lights, and other accessories without a rail adapter. The rifle ships with a Magpul MOE-K grip and a collapsible carbine stock. 
 

Who It's For 

 
The DB-10 Carbon is positioned as an entry-level .308 semi-auto at a price below many established competitors. It works for hunting medium to large game, sport shooting, and longer-range range work where the .308 caliber makes sense over 5.56. Buyers interested in future customization will find a wide range of compatible AR-10-pattern parts.

The DB-10 Carbon generates mixed feedback, with most discussion framed around what you get at its price point.

The carbon-influenced lightweight construction comes up frequently — shooters who carry the rifle over long distances appreciate that it handles more like a lighter rifle than most .308 semi-autos. Pricing relative to the feature set draws consistent positive comments; it's routinely compared favorably to pricier AR-10-pattern competitors. Out-of-the-box accuracy gets decent marks from most reviewers, and the OD Green/Black finish has appeal for shooters who prefer a non-standard color scheme.

Reliability is the main area of concern. A meaningful number of owners report feeding failures or ejection issues, which is a real problem for a semi-auto at any price. Build quality variance is another recurring theme — some units feel tight and finished, others come with cosmetic or mechanical inconsistencies. Trigger feedback is split: acceptable to some, disappointing to others who expected a better pull at this price. Diamondback's customer service gets mixed reviews, with some buyers reporting resolution and others describing delays.

The DB-10 Carbon is worth considering for buyers who accept some variability risk in exchange for price, and who are comfortable doing minor fitting or upgrades if needed.