AR-10 .308 20" Straight Fluted HBAR Barrel – 416 Stainless Steel, DPMS Compatible

.308 Win

AR-10 .308 20" Heavy HBAR Straight Fluted Barrel, 416 Stainless, Rifle Gas, DPMS Compatible – Moriarti Armaments

Maximize your AR-10’s accuracy and aesthetics with the Moriarti Armaments 20” .308 Heavy HBAR Straight Fluted Barrel, crafted from premium 416 stainless steel, hardened to 26–32 RC and stress-relieved for long-term precision.

The straight fluting not only enhances the look but helps reduce overall weight and improve cooling efficiency during extended fire. Chambered in .308 Winchester with a 1:10 right-hand twist, this barrel is built for long-range accuracy, durability, and reliability.

The barrel comes pre-installed with a barrel extension and pin, plus an M4-style feed ramp and pre-drilled gas port for easy installation. Designed for a rifle-length gas system with a .750” gas block journal and 5/8x24 muzzle threads, this is a top-tier upgrade for any DPMS-pattern AR-10 rifle.

Barrel Features:

• Caliber: .308 Winchester

• Length: 20 inches

• Material: 416 Stainless Steel (Hardened to 26–32 RC, stress-relieved)

• Profile: Heavy HBAR, Straight Fluted

• Twist Rate: 1:10 RH

• Gas System: Rifle-length

• Gas Block Diameter: .750"

• Muzzle Thread: 5/8x24 TPI

• Feed Ramps: M4 Style

• Includes: Barrel extension and extension pin (installed)

• Compatibility: DPMS .308 AR-10 platforms