Diamondback DB Barrel 5.56x45mm NATO 16″ M4 Contour

Overview

The Diamondback DB Barrel is a 16-inch M4 contour barrel chambered for 5.56x45mm NATO, designed for AR-style rifle builds. It is manufactured from 4150 Chrome Moly Vanadium steel and finished with a black nitride treatment to improve surface hardness and corrosion resistance. The carbine-length medium/M4 profile offers familiar handling and compatibility with common gas systems. A 1:8 rate of twist supports a broad range of bullet weights for general-purpose shooting.

Key Specifications

• The caliber is 5.56x45mm NATO.
• The barrel measures 16 inches in length.
• The rate of twist is 1:8.
• The barrel material is 4150 Chrome Moly Vanadium steel.
• The finish is Black Nitride.
• The barrel profile is Carbine Length Medium/M4 Profile.
• The model designation is DB Barrel.

Built from proven materials and finished for durability, this Diamondback barrel provides a dependable foundation for AR builds where predictable performance and familiar handling are priorities. Its combination of M4 contour, 1:8 twist, and nitride finish makes it a practical choice for shooters assembling a reliable, everyday rifle platform.

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