Diamondback Firearms DB15 5.56 NATO 16" - AR-15 Rifle

A solid 5.56 NATO AR-15 without the fluff: the Diamondback Firearms DB15 5.56 NATO 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 NATO, the Diamondback Firearms DB15 5.56 NATO 16" combines direct impingement operation with standard AR-15 architecture for straightforward reliability.

Consistent Cycling: The direct impingement system delivers consistent cycling across the standard 5.56 NATO ammunition spectrum without requiring frequent cleaning or special maintenance.

Versatile Configuration: With a 16" barrel and standard AR-15 ergonomics, this rifle fits the broadest possible range of users and use cases without compromise in any single area.

Upgrade-Friendly Platform: Everything on this AR-15 is standard — stocks, grips, handguards, triggers, and optic mounts can all be upgraded without specialized tools or gunsmithing knowledge.

Weather-Resistant Finish: The OD Green Cerakote finish provides lasting protection against corrosion and everyday wear — reliable function from the first range trip to the last.

• Caliber: 5.56 NATO
• Barrel Length: 16"
• Gas System: Direct Impingement
• Handguard: M-Lok Free-Float
• Muzzle Threading: 1/2x28
• Magazine Capacity: 30-Round
• Finish: OD Green Cerakote
• Origin: Made in the USA

Accepts all STANAG-pattern 5.56 NATO magazines and pairs with any mil-spec AR-15 lower receiver. Compatible with standard carbine buffer systems and mil-spec lower parts kits.

The upper and lower receivers are constructed from 7075-T6 with a OD Green Cerakote 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.