The Diamondback DB15 in 5.56x45mm NATO (MPN DB1758K071) is a semi-automatic AR-15 rifle finished in Midnight Bronze, pairing a carbine-length, medium-contour 4150 ChromeMoly 16-inch barrel with a 1-in-8 twist rate. Diamondback Firearms runs a mid-length gas system with a pinned gas block and a shot-peened Mil-Spec 8620 bolt carrier, and builds the rifle on 7075-T6 aluminum receivers. The 15-inch M-Lok anti-rotation handguard pairs with a black Magpul MOE-K2+ grip and a Midnight Bronze Magpul ACS-L adjustable stock. The muzzle is threaded at 1/2-28, and the rifle feeds from a detachable magazine with a 30+1 capacity, shipping with one 30-round PMAG and a manual thumb safety. Among AR-platform rifles in the AR rifles category, the DB15 favors shooters who want a distinctively finished, well-appointed AR-15.

Key Specifications

• Chambered in 5.56x45mm NATO with a 1-in-8 twist rate.
• Features a 4150 ChromeMoly 16-inch barrel, medium contour.
• Finished in Midnight Bronze.
• Runs a mid-length gas system with a pinned gas block.
• Includes a shot-peened Mil-Spec 8620 bolt carrier.
• Fitted with a 15-inch M-Lok anti-rotation handguard.
• Wears a Magpul ACS-L adjustable stock and Magpul MOE-K2+ grip.
• Threaded muzzle at 1/2-28.
• Feeds from a detachable magazine with a 30+1 capacity.
• Uses a manual thumb safety.

Frequently Asked Questions

What finish does this rifle use? Midnight Bronze.

What gas system does this rifle use? A mid-length gas system with a pinned gas block.

Buy the Diamondback DB15 Midnight Bronze

A distinctively finished, well-appointed AR-15 is exactly what this DB15 delivers. As soon as it is ready to ship, order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.