The Diamondback Firearms DB15 is a semi-automatic .300 Blackout rifle built on a forged 7075-T6 aluminum receiver set and finished in Burnt Bronze Cerakote. Its 16-inch 4150 chrome-moly barrel features a 1:8 twist, 5/8x24 muzzle threads, and an A2 flash hider. A pistol-length direct-impingement gas system, 15-inch M-LOK handguard, Magpul MOE grip, and MOE PR Carbine stock provide a practical and adaptable configuration. The A3 flattop receiver and Picatinny rail are ready for an optic, while the rifle feeds from polymer AR-style magazines.

Key features

• .300 Blackout chambering supports a versatile range of factory ammunition
• 16-inch 4150 chrome-moly barrel with a 1:8 twist for reliable projectile stabilization
• 5/8x24 threaded muzzle supports compatible muzzle devices and suppressors
• 15-inch M-LOK handguard provides flexible accessory mounting with integrated Picatinny rail
• Forged 7075-T6 aluminum receivers provide a durable lightweight foundation
• Magpul MOE grip and MOE PR Carbine stock enhance handling and user comfort

The Diamondback DB15 combines a practical AR-style layout with a threaded .300 Blackout barrel and optic-ready receiver for a flexible rifle configuration.