Diamondback 308 Win 13.50" Mid-Length Black Nitride Barrel - 4150 Chrome Moly Vanadium Steel OEM Replacement

The Diamondback 308 Win 13.50" mid-length black nitride barrel is a direct OEM replacement built for shooters who demand durability and reliability in their rifle platform. If you're running a Diamondback AR or need a precision rifle barrel chambered in .308 Winchester, this mid-length option gives you the ballistic performance and handling characteristics that suit intermediate-range work—whether you're at the range, hunting, or setting up a precision rifle for competition. The 13.50" length hits the sweet spot between muzzle velocity and manageable overall weapon length, making it a practical choice for both bench shooting and field use.

Built from 4150 chrome moly vanadium steel, this barrel is forged to handle repeated high-pressure loading cycles without premature wear. The black nitride finish adds a hard, corrosion-resistant surface that protects against rust and simplifies field maintenance. Nitride treatments are proven in military and law-enforcement applications, so you're getting battle-tested surface hardness in an OEM-spec replacement barrel.

Whether you're replacing a worn barrel, building a backup upper, or swapping to a different length for a new role, this Diamondback barrel maintains the factory fitment and reliability you expect from OEM parts. Pair it with your bolt carrier, gas system, and upper receiver assembly—no smithing required.

Key Features

• .308 Winchester chambering with mid-length gas system geometry
• 13.50" barrel length for balanced velocity and handling
• 4150 chrome moly vanadium steel construction for strength and longevity
• Black nitride finish for corrosion resistance and durability
• OEM-spec dimensions for direct drop-in replacement

Specifications

Frequently Asked Questions

Will this barrel fit my Diamondback AR?

This is an OEM replacement barrel designed to fit Diamondback rifle platforms chambered in .308 Winchester. For fitment on non-Diamondback uppers or lowers, verify compatibility with your specific receiver before purchasing.

What gas system length is this?

This barrel features a mid-length gas system, which is a standard configuration for .308 rifles. Mid-length gas tubes generally offer a balance between reliability and recoil impulse in this caliber.

Can I use this for hunting or long-range shooting?

.308 Winchester is a proven hunting and precision rifle cartridge. A 13.50" barrel will produce less muzzle velocity than longer barrels, but remains suitable for mid-range hunting and target work depending on your distance and game.

What makes nitride finish better than other coatings?

Black nitride is a case-hardening process that creates a thin, extremely hard surface layer bonded to the steel itself. It resists corrosion, simplifies cleaning, and lasts longer than blued or parkerized finishes under typical field use and storage.