The Diamondback DB15 5.56 rifle pairs a 16-inch barrel with a 15-inch M-LOK free-float handguard and a two-tone Desert Sage and Gun Metal Gray Cerakote finish (part no. DB1780K99). It is built on Diamondback Firearms‘ Carbon Series foundation, the company’s value-focused DB15 line, with a forged 7075-T6 upper and a DB15 Carbon lower. Magpul furniture comes standard, including an MOE grip and MOE SL-K carbine stock in Stealth Gray and a 30-round Gen M3 PMAG. The 4150 CrMoV barrel is black nitrided with a 1:8 twist, which handles everything from light varmint bullets to heavier defensive loads. It is a practical do-it-all AR for the range, home defense or a first rifle, with a finish that sets it apart from a plain black gun.

Key Specifications

• The chambering is 5.56 NATO, the most widely available AR-15 cartridge for training and defense.
• The barrel is a 16-inch medium-contour 4150 CrMoV barrel with a black nitride finish for durability.
• Rifling twist is 1:8 RH, a versatile rate for a broad range of bullet weights.
• Gas is a carbine-length direct impingement system, the standard layout for a 16-inch AR.
• The finish is Desert Sage and Gun Metal Gray Cerakote, a two-tone coating that resists wear and corrosion.
• The handguard is a 15-inch M-LOK rail with anti-slip texture pads, free-floating the barrel with room for accessories.
• The upper is an A3 flattop forged from 7075-T6 aluminum with T-markings for repeatable optic placement.
• Furniture is Magpul MOE grip and MOE SL-K carbine stock in Stealth Gray, both proven and comfortable.
• It ships with a Magpul Gen M3 30-round PMAG, a durable polymer magazine with a strong service record.
• Weight is 6.7 pounds, light enough to carry all day with an optic mounted.

Frequently Asked Questions

What finish does this DB15 have? It is finished in a two-tone Desert Sage and Gun Metal Gray Cerakote, paired with Stealth Gray Magpul furniture.

Does the rifle come with sights? No. The DB15 ships without sights, leaving the full-length Picatinny top rail open for your choice of optic or backup irons.

What muzzle device and trigger does it use? It has an A2 flash hider on a 1/2×28 thread and a standard mil-spec trigger, so aftermarket upgrades drop right in.

Buy the Diamondback DB15 5.56 NATO Rifle in Desert Sage and Gun Metal Gray

Diamondback builds its DB15 rifles in Cocoa, Florida, and this one adds a two-tone Cerakote finish and Magpul parts without stepping into premium pricing. See it with our other AR rifles, and order from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.