Dmndbk Bbl 556 16" Carb Med 1/8 Blk

The Diamondback Barrel 5.56 16" Carbine Medium 1/8 Twist is a purpose-built rifle barrel engineered for patrol, training, and tactical deployment. Chambered in 5.56mm NATO with a carbine-length gas system, this 16-inch barrel delivers the velocity-to-length balance that defines modern intermediate-rifle performance, while the medium contour profile keeps weight down without sacrificing rigidity under sustained fire. Built from 4150 chrome moly steel and finished in black nitride coating, this barrel is designed to withstand the demands of duty and training cycles.

The 1:8 twist rate stabilizes modern duty ammunition effectively across typical 5.56 loadings, including heavier projectiles used by law enforcement and military operators. Button rifled with 6-groove bore and M4 feed ramps, the barrel ensures reliable chambering and extraction through varied ammunition types. The 1/2 x 28 threading accommodates standard muzzle devices—flash hiders, suppressors, or compensators—common to AR-platform configurations. At 1.81 lbs, the barrel maintains the lightweight handling that carbine systems demand without introducing barrel whip or accuracy drift under operational use.

This barrel serves law enforcement patrol rifles, military training platforms, and civilian marksmen who require a proven 5.56 barrel with American manufacturing standards. The combination of carbine-length gas impulse, medium profile, and 1:8 stabilization makes this barrel suitable for duty ammunition across the typical performance envelope. Diamondback's 100% American manufacturing positions this barrel as a direct alternative to factory OEM barrels for replacement builds, upper assemblies, and service rifle maintenance programs.