The Diamondback Firearms AR-15 Barrel (brand part number DB556C16M50B8-R) is a 16-inch, threaded 5.56 NATO/.223 Remington barrel cut with a 1:8-inch twist and a carbine-length gas system. Diamondback Firearms machines it from 4150 chrome-moly vanadium steel, engineered for durability, enhanced corrosion resistance, and superior heat dissipation shot after shot. It is precision-crafted for both professional and recreational shooters who want a reliable, accurate upgrade barrel or a solid foundation for a custom AR-15 build.

Key Specifications

• Measures 16 inches in barrel length.
• Rated for 5.56 NATO/.223 Remington.
• Cut with a 1:8-inch rate of twist.
• Built with a carbine-length gas system.
• Machined from 4150 chrome-moly vanadium steel.
• Delivers enhanced corrosion resistance.
• Provides superior heat dissipation under sustained fire.
• Threaded muzzle for direct muzzle device installation.
• Precision-crafted for consistent accuracy shot after shot.

Frequently Asked Questions

What twist rate does this barrel use? 1:8 inches.

What gas system length is this barrel built for? Carbine-length.

What material is the barrel made from? 4150 chrome-moly vanadium steel.

Buy the Diamondback Firearms AR-15 16-Inch Barrel

Build or upgrade a 5.56 AR-15 with a durable, precision-cut barrel. Order it from our AR barrel selection at our Lubbock, Texas gun shop for fast, direct shipping.