Diamondback Firearms DB15BG 5.56mm Semi-Auto AR Rifle 16″ Black Nitride V Rail

The Diamondback Firearms DB15BG is a no-frills, purpose-built AR-15 chambered in .223 Rem/5.56 NATO, equally at home on the range or configured for home defense. Its 16-inch black nitride barrel delivers reliable corrosion resistance and extended service life without the weight penalty. The V Rail handguard system provides a clean, versatile platform for mounting accessories exactly where you need them. This is a solid, American-made foundation for shooters who demand performance without compromise.

Key Specifications

• Chambered in .223 Rem / 5.56 NATO for broad ammunition compatibility.
• The barrel measures 16 inches, keeping the rifle maneuverable while maintaining legal rifle length.
• A black nitride barrel finish provides enhanced corrosion resistance and reduced friction for consistent performance.
• The rifling features a 1:8-inch twist rate, stabilizing a wide range of projectile weights effectively.
• The muzzle is threaded 1/2″-28 TPI, ready to accept standard AR-15 muzzle devices.
• Ships with one 30-round Magpul PMAG included.
• The action is semi-automatic with a manual safety.
• Overall length is 32.75 inches.
• Color is black throughout, with a V Rail handguard for accessory mounting flexibility.
• Optics-ready platform with no sights included, allowing shooters to mount their preferred optic system.

Whether you’re building your first AR platform or adding a reliable workhorse to an established collection, the Diamondback DB15BG delivers where it counts. The black nitride barrel, 1:8 twist, and threaded muzzle give you a combat-capable, upgrade-ready rifle right out of the box. Pair it with your preferred optic, muzzle device, and accessories on the V Rail system, and you have a truly personalized, high-performance rifle built on a proven platform.