Diamondback DB Barrel 5.56x45mm NATO 7" Pistol-Length 1:8 Twist Black Nitride

The Diamondback DB Barrel is an OEM replacement barrel chambered in 5.56x45mm NATO, designed for AR-15 pistol and short-barreled rifle builds. Cut to 7 inches with a pistol-length gas system, this barrel provides the compact handling needed for pistol platforms while supporting reliable cycling.

The barrel is machined from 4150 Chrome Moly Vanadium Steel and finished in Black Nitride. Its heavy profile adds mass around the chamber and bore, and a 1:8" twist stabilizes a broad range of bullet weights.

Whether you are replacing a worn factory barrel or completing a custom AR pistol or SBR project, the Diamondback DB Barrel offers the geometry, materials, and finish expected from a quality AR-platform component.