Diamondback Firearms DB15 5.56 NATO Semi-Auto Rifle 16″ Black KAC M-LOK

The Diamondback Firearms DB15 is a no-compromise, semi-automatic AR-platform rifle chambered in .223 Rem/5.56 NATO and built for duty-ready performance. Outfitted with a KAC M-LOK handguard, Magpul MBUS backup sights, and a 30-round PMAG straight from the box, this rifle is ready for range work, home defense, or serious recreational shooting without requiring immediate upgrades.

Key Specifications

• The DB15 is chambered in .223 Rem / 5.56 NATO for broad ammunition compatibility.
• The barrel measures 16 inches, striking a practical balance between velocity and maneuverability.
• A 1-in-7 inch rate of twist stabilizes a wide range of projectile weights effectively.
• The action is semi-automatic, operating on the proven AR-15 direct-impingement platform.
• The handguard features a KAC M-LOK interface for flexible accessory mounting.
• Backup iron sights are provided by Magpul MBUS adjustable flip-up sights.
• Includes one 30-round Magpul PMAG magazine ready to go out of the box.
• The rifle is finished in black with a durable, hard-use-ready exterior.
• ATF classification is a rifle, semi-automatic.

The DB15 punches well above its class by pairing a quality KAC M-LOK rail system with Magpul MBUS sights and a PMAG at a competitive entry point — details that separate it from stripped-down alternatives. Whether you’re building a dedicated home-defense carbine or a versatile range rifle, the DB15 delivers a ready-to-run platform that rewards customization without demanding it. Add it to your collection and get behind a rifle that’s built to work.