The Diamondback Firearms DB15 is a .300 Blackout semi-automatic rifle built on a forged 7075-T6 aluminum receiver set. Its 16-inch 4150 chrome moly barrel uses a 1:8 twist and a 5/8x24 threaded muzzle fitted with an A2 flash hider. A pistol-length direct-impingement gas system supports reliable cycling, while the 15-inch M-LOK handguard provides flexible accessory mounting. Magpul MOE furniture includes the grip and PR carbine stock. The A3 flattop upper receiver and Picatinny rail make the rifle ready for a compatible optic.

Key features

• .300 Blackout chambering supports versatile supersonic and subsonic ammunition options
• 16-inch 4150 chrome moly barrel with a 1:8 twist for dependable projectile stabilization
• 5/8x24 threaded muzzle supports compatible .300 Blackout muzzle devices and suppressors
• 15-inch M-LOK handguard with Picatinny rail provides adaptable accessory mounting
• Forged 7075-T6 aluminum receiver offers a durable, lightweight foundation
• Magpul MOE grip and PR carbine stock provide practical handling and length-of-pull adjustment range

The Diamondback DB15 combines a practical carbine layout with optic-ready controls and .300 Blackout capability for range, hunting, and defensive applications.