The Diamondback DB Barrel (brand part no. DB7.62X39C16M50B9.5-R) is a 7.62x39mm, 16-inch AR barrel with a carbine-length gas system, built for a builder replacing a worn barrel or finishing a fresh upper. Diamondback Firearms machines it from 4150 chrome-moly vanadium steel and finishes it in black nitride for corrosion and wear resistance, with a 1:9.5 rate of twist matched to standard 7.62x39mm bullet weights for reliable, consistent stabilization downrange.

Key Specifications

• Chambered in 7.62x39mm.
• Barrel length of 16 inches.
• Built with a carbine-length gas system.
• Machined from 4150 chrome-moly vanadium steel.
• Finished in black nitride for corrosion and wear resistance.
• 1:9.5 rate of twist matched to standard 7.62x39mm bullet weights.

Frequently Asked Questions

What caliber is this barrel chambered in? 7.62x39mm.

What gas system length does it use? Carbine-length.

What is the rate of twist? 1:9.5, matched to standard 7.62x39mm bullet weights.

Buy the Diamondback DB Barrel

Finish or refresh a 7.62x39mm AR build with a genuine nitride-finished barrel. Order it from our AR barrels selection at our Lubbock, Texas gun shop for fast, direct shipping.