Diamondback DB15 300 AAC Blackout 16" 30+1 Semi-Auto Rifle

The Diamondback DB15 is a modern sporting rifle built around a 16" barrel chambered in 300 AAC Blackout, giving shooters a versatile, AR-15-pattern platform ready for suppressed fire from the factory. The DB15 line combines mil-spec controls with feature upgrades that punch well above its price point, making it a popular choice for range use, home defense, and as a launching point for custom builds.

At the core of this rifle is a 16" 4150 Chrome-Moly-Vanadium barrel finished in Black Nitride with a 1:8" twist to stabilize a wide range of 300 BLK bullet weights from supersonic projectiles through heavy subsonic rounds. The barrel is threaded and capped with a classic A2 flash hider, so swapping to a suppressor or aftermarket muzzle device is a straightforward change.

The upper and lower are built around a Black Hardcoat Anodized Aluminum/Carbon receiver set with an integrated Picatinny rail across the top for easy optics or back-up iron mounting. Sights are not included, keeping the receiver flat-topped and optic-ready right out of the box. Rounding out the furniture is an M-LOK handguard for accessory attachment and a Magpul MOE pistol grip for a secure, ergonomic hold.

Internally, the DB15 uses a Mil-Spec trigger and semi-automatic action with a 30+1 round magazine capacity. The rifle weighs in at 6.70 lbs unloaded, with an adjustable stock that allows the overall length to extend from approximately 32.75" to 36". Whether you are getting into 300 BLK for the first time or need a feature-rich AR to suppress and configure, the Diamondback DB15 delivers the essentials without the premium price tag.

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