The Diamondback Firearms DB15 is a reliable modern sporting rifle chambered in 5.56 NATO and built around a direct-impingement, mid-length gas system. Its 16-inch medium-contour 4150 chrome-moly steel barrel features a 1:8 twist and a threaded muzzle for compatible accessories. The forged 7075-T6 aluminum receiver set includes an A3 flattop upper receiver, while the 15-inch M-LOK V-Rail handguard provides flexible mounting space for lights, grips, and other equipment. A Magpul CTR stock and MOE K2 grip improve handling and user comfort, and the rifle includes one polymer AR-style magazine.

Key features

• 5.56 NATO chambering supports widely available ammunition and dependable field performance
• Direct-impingement mid-length gas system provides balanced operation and reduced handling fatigue
• 16-inch medium-contour 4150 chrome-moly steel barrel has a 1:8 twist for versatile projectile stabilization
• Threaded muzzle supports compatible muzzle devices and suppressor mounts
• 15-inch M-LOK V-Rail handguard offers broad accessory placement options
• A3 flattop upper receiver is ready for the addition of a compatible optic or sighting system

The Diamondback DB15 combines practical AR-style controls, adaptable furniture, and a versatile 5.56 NATO configuration for range use and general-purpose shooting.