7.5″ 5.56mm 1:7 Twist Contour 4150 Barrel (Rainbow PVD Coated) (Tie Dye Pattern)

Description

This 7.5-inch barrel is chambered for 5.56mm/.223 caliber cartridges and features 1:7 Twist rate to stabilize heavier projectiles effectively. Constructed from 4150 Chromoly Steel, it provides a robust foundation for custom upper receiver builds. The exterior is finished with a Matte Rainbow PVD (Physical Vapor Deposition) coating that exhibits a distinctive Tie Dye Pattern. This aesthetic coating improves durability and lubricity while offering visual distinction from standard finishes.

The barrel utilizes a .750 Gas Platform System, ensuring compatibility with gas blocks and tubes designed for this specific diameter. It includes M4 Feed Ramps to ensure reliable feeding from standard magazines. The gas system is configured as a Pistol Length Gas System, which is critical for maintaining proper gas timing in short-barrel configurations. Spiral Engraved markings are located near the break, providing clear identification of the barrel’s specifications without requiring external labeling.

For builders assembling a compact AR-15, this barrel’s dimensions and specifications are tailored for precision fitment. The Contour Profile helps manage weight while maintaining structural integrity under repeated firing cycles. The combination of 4150 Chromoly Steel and the PVD coating ensures longevity. This component serves as a core element for custom builds requiring a short, responsive platform with specific gas system requirements. The product is designed for experienced builders who require exact specifications for their builds.