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

Built to work and priced to own, the Diamondback Firearms Diamond DB15 .223 5.56 16" brings dependable 5.56 performance to the AR-15 platform without the premium cost of boutique manufacturers or the compromises of budget builds.

Chambered in 5.56 and running a direct impingement system, the Diamondback Firearms Diamond DB15 .223 5.56 16" is a semi-automatic AR-15 rifle engineered for consistent performance across a wide range of applications.

Consistent Cycling: The direct impingement system delivers consistent cycling across the standard 5.56 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 Type III Hardcoat Anodized finish provides lasting protection against corrosion and everyday wear — reliable function from the first range trip to the last.

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

Fully compatible with standard AR-15 lower receivers and STANAG-pattern 5.56 magazines. Works with mil-spec carbine buffer systems, standard lower parts kits, and the broad ecosystem of AR-15 aftermarket accessories.

Built from 7075 aluminum with a Type III Hardcoat Anodized finish, this AR-15 rifle holds up to sustained use without sacrificing dimensional accuracy or function.

Well-suited for home defense, recreational target shooting, and competitive carbine matches. A natural choice for shooters building a versatile general-purpose AR-15.

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.