The Diamondback Firearms DB15 is a .300 Blackout semi-automatic rifle built on a forged 7075-T6 aluminum receiver. It features a 16-inch 4150 chrome-moly rifled barrel with a 1:8 twist rate, pistol-length gas system, direct-impingement operation, and a threaded muzzle with a 5/8x24 thread pattern. The rifle includes a 15-inch M-LOK handguard with Picatinny rail sections, an MOE grip, an MOE PR carbine stock, a mil-spec trigger, an A2 flash hider, forward assist, and a dust cover. Its flattop receiver provides a solid foundation for adding an optic.

Key features

• Chambered in .300 Blackout for versatile range and hunting applications
• 16-inch 4150 chrome-moly barrel with a 1:8 twist rate
• Threaded 5/8x24 muzzle supports compatible muzzle devices and suppressors
• 15-inch M-LOK handguard provides flexible accessory mounting
• Flattop receiver is optic ready for a user-selected sighting system
• MOE grip and MOE PR carbine stock provide familiar AR-style ergonomics and adjustability

The Diamondback Firearms DB15 combines familiar AR-style controls with .300 Blackout capability and a modular M-LOK configuration.