Diamondback Firearms Carbon Series DB15 .223 5.56 16" - AR-15 Rifle

A solid 5.56 AR-15 without the fluff: the Diamondback Firearms Carbon Series DB15 .223 5.56 16" focuses on reliable function, practical configuration, and durable construction in a package ready to use straight from the box.

A semi-automatic AR-15 rifle chambered in 5.56, the Diamondback Firearms Carbon Series DB15 .223 5.56 16" combines carbine-length direct impingement operation with standard AR-15 architecture for straightforward reliability.

Proven Gas System: Running a carbine-length direct impingement system that has proven itself across millions of rounds in the field, this 5.56 platform brings that reliability record to every range session and defensive use case.

Well-Balanced Profile: The 16" barrel and M-LOK free-float handguard combination keep this rifle handy without sacrificing the sight radius and velocity that make the 5.56 cartridge effective.

AR-15 Ecosystem Access: Standard AR-15 compatibility means accessories, replacement parts, and upgrade components are universally available — this rifle will never be an orphan platform.

Low-Maintenance Reliability: A quality finish and properly spec'd components reduce maintenance requirements without cutting corners on durability — more time shooting, less time cleaning.

• Caliber: 5.56
• Barrel Length: 16"
• Barrel Twist: 1:8"
• Gas System: Carbine-Length Direct Impingement
• Handguard: M-Lok Free-Float
• Muzzle Threading: 1/2x28
• Magazine Capacity: 30 Round
• Finish: Type III Hardcoat Anodized
• Origin: Made in the USA

Works with standard AR-15 lower receivers and accepts STANAG 5.56 magazines. Designed for mil-spec carbine buffer systems and compatible with the full ecosystem of AR-15 parts and accessories.

The upper and lower receivers are constructed from 7075-T6 with a Type III Hardcoat Anodized finish — a durable combination that resists corrosion and maintains tight tolerances over an extended service life.

Equally at home on a training range or in a home defense role. A go-to configuration for shooters who want one dependable AR-15 for multiple applications.

Diamondback Firearms builds a full range of AR-15 rifles with an emphasis on reliability and value, offering solid performance at competitive price points. Made in the USA.