The Diamondback DB10 is chambered in .308 Win and built on a 7075-T6 aluminum receiver. The 18-inch 416 stainless barrel has a 1:10" twist rate, and the adjustable Magpul ACS-L stock brings overall length between 37.25" and 40.75" depending on setting. At 8.96 lbs it's a substantial rifle, which tracks for a .308 semi-auto with this barrel length. 
 

Key Specifications 

• Model: DB10 
• Brand: Diamondback 
• Caliber: .308 Win 
• Action: Semi-Auto 
• Barrel Length: 18 inches 
• Capacity: 20+1 rounds 
• Weight: 8.96 lbs 
• Overall Length (OAL): 37.25" - 40.75" 
• Trigger Type: Single-stage trigger with manual thumb safety 
• Stock Type: Adjustable Magpul ACS-L 
• Sights: Optic Ready (No iron sights included) 
• Barrel Material: 416 Stainless Steel with a twist rate of 1:10" 
   

Detailed Features 

 
The 416 stainless barrel holds up well under sustained fire and is resistant to the corrosion that can affect chrome moly barrels in wet conditions. The 1:10" twist stabilizes standard .308 projectile weights without issue. 
 
The single-stage trigger has a consistent pull that works well for precision shooting, and the manual thumb safety adds a mechanical layer of security. A muzzle brake reduces felt recoil, which matters on a rifle this weight in .308 — faster follow-up shots are noticeably easier with it installed. 
 
The optic-ready flat top accepts standard AR-10-pattern mounts.

The DB10 in Midnight Bronze tends to generate genuinely positive feedback on build quality and accuracy. Owners describe the action as smooth and the rifle as consistently reliable during range sessions. The Midnight Bronze finish gets attention for being visually different from standard black or FDE offerings.

Compatibility with standard AR-10 accessories is a recurring positive — users appreciate being able to swap in aftermarket parts without running into proprietary fitment issues.

On price, the DB10 is generally considered competitive for a .308 semi-auto of this spec level. The main caveats that come up: some rifles need a break-in period before cycling becomes fully smooth, and a few users have reported component quality that doesn't quite match higher-end .308 platforms at similar price points. Diamondback customer service reviews are split, with some owners reporting good experiences and others noting slower or frustrating resolution on warranty claims.