Diamondback Carbon Series DB15 – 16″ 5.56 NATO (PN: DB1780K281)

Lightweight, Rugged, and Feature-Rich AR-15 Platform

The Diamondback Carbon Series DB15 is a sleek, American-built AR-15 designed for both tactical use and recreational shooting. Chambered in 5.56 NATO with a 16″ 4150 CMV barrel and durable Black Nitride finish, this rifle offers reliable accuracy with a 1:8 twist rate. Equipped with forged 7075-T6 aluminum upper and lower receivers, it maintains strength without excess weight. The 15″ free-float M-LOK handguard provides modularity for lights, lasers, or foregrips, and includes an OD Green Cerakote finish for rugged durability in field conditions. High-performance B5 Systems components—including P-Grip, vertical foregrip, and Bravo stock in Multicam Black—enhance ergonomics and shooter comfort.

Built with a carbine-length direct impingement gas system and an A2 flash hider threaded 1/2×28, the DB15 delivers dependable performance and accessory compatibility. The magnetic particle–inspected, shot-peened BCG with Mil-Spec carrier ensures durability under heavy use. Magpul Gen M2 magazine provides 30+1 capacity, while the standard Mil-Spec trigger and 2-position thumb safety make it user-friendly out of the box. Weighing approximately 6.2 lb and measuring between 33″ and 36″ depending on stock position, this rifle balances maneuverability with solid handling. Optics are up to the user—no sights are installed, allowing full personalization.

Specifications

The DB15 Carbon Series rifle is built to serve. Whether you’re setting up a home-defense platform, evolving your AR build, or building a go-to range rig, this feature-packed, lightweight rifle delivers. Talk to our SPI Guns team for holster and optic combos, upgraded triggers, or precision barrels.