Diamondback DB10 .308 Win 20in 15in M-LOK 20rd Black

Description

The Diamondback DB10 .308 Win 20in 15in M-LOK 20rd Black is a semi-automatic AR-pattern rifle built for field use, precision work, and range applications. Chambered in .308 Winchester, it ships with a 20-inch Diamondback barrel featuring a 1:10 right-hand twist and a rifle-length gas system with a Superlative adjustable gas block for tuning reliability across various loads. The 15-inch M-LOK handguard and Magpul MOE furniture provide practical ergonomics and accessory mounting, while a 20-round Magpul Gen M3 PMAG is included for standard capacity use.

Manufacturer	Diamondback Firearms
Model	DB10
Material	7075-T6 aluminum upper and lower receiver (per manufacturer specs)
Compatibility	.308 Winchester / 7.62x51mm NATO
Finish	Type III hard coat anodized, black
Weight	8.75 lbs (empty, per manufacturer specs)
Condition	New

Key Features

• 20-inch Diamondback barrel with 1:10 twist — Why it matters: The 1:10 twist rate stabilizes heavy .308 projectiles (150-175 grains) for consistent accuracy at 600+ yards, making it a solid choice for long-range target work and hunting.
• Superlative adjustable gas block — Why it matters: This lets you dial in the gas system for suppressed or unsuppressed use, reducing recoil and improving reliability with different ammunition types without over-gassing the action.
• 15-inch M-LOK handguard — Why it matters: The free-float design eliminates barrel contact, improving precision, while the M-LOK slots allow you to mount bipods, lights, or grips exactly where you need them without adding bulk.
• Magpul MOE furniture (stock and grip) — Why it matters: The MOE stock offers a friction-lock adjustment for a custom length of pull, and the MOE grip has a storage compartment and a natural angle that reduces wrist fatigue during extended sessions.
• 20-round Magpul Gen M3 PMAG included — Why it matters: This magazine is known for its impact-resistant polymer and anti-tilt follower, giving you reliable feeding right out of the box without needing to buy extras.

Who It’s For

This rifle suits the traditional shooter who wants a reliable .308 platform for hunting deer or hogs, the precision-minded rifleman who values a free-float handguard and adjustable gas block for consistent groups, and the AR enthusiast who prefers a large-frame platform with standard Magpul controls. It’s also a practical choice for the budget-conscious buyer who wants factory-built quality without the custom-build hassle.

Pros and Cons

Pros

• Adjustable gas block from Superlative—rare at this price point
• Free-float M-LOK handguard for precision and accessory mounting
• Magpul furniture and magazine included
• Rifle-length gas system reduces felt recoil

Cons

• Heavier than some competition at 8.75 lbs empty—noticeable on long hikes
• No iron sights included—budget for optics or BUIS

Comparison: Diamondback DB10 vs. Geissele Super Duty .308 vs. Zev Technologies AR-10

Feature	Diamondback DB10	Geissele Super Duty .308	Zev Technologies AR-10
Price	~$975	~$2,800	~$2,500
Barrel material	4150 chrome-moly steel	416R stainless steel	416R stainless steel
Gas block	Superlative adjustable	Geissele fixed	Adjustable (low-profile)
Handguard	15-inch M-LOK free-float	15-inch M-LOK free-float	15-inch M-LOK free-float
Weight (empty)	8.75 lbs	9.2 lbs	8.9 lbs
Included magazine	Magpul Gen M3 20rd	Geissele 20rd	Zev 20rd

The Diamondback DB10 offers an adjustable gas block and Magpul furniture at less than half the price of the Geissele or Zev, making it a strong value for shooters who want precision features without the premium cost.

FAQ

What is the barrel twist rate on the Diamondback DB10?

The Diamondback DB10 has a 1:10 right-hand twist, which stabilizes .308 bullets from 150 to 175 grains effectively for hunting and target shooting.

Does the Diamondback DB10 come with iron sights?

No, it does not include iron sights. You will need to add optics or backup iron sights (BUIS) to use the rifle.

Can I use 7.62x51mm NATO ammunition in this rifle?

Yes, the DB10 is chambered for .308 Winchester, and it safely fires 7.62x51mm NATO ammunition per industry standards. Always verify headspace with a gunsmith if using mixed surplus ammo.

What is the warranty on the Diamondback DB10?

Diamondback Firearms offers a limited lifetime warranty on the receiver and a one-year warranty on other components. Contact their customer service for details.

Trusted Delivery & Support

• ✅ Nationwide delivery (all 50 states)
• ✅ Ships 1-2 business days
• ✅ 30-day returns
• ✅ Secure checkout

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Last updated: April 2026