5.5″ 300 AAC BLKOUT 1:7 Twist Contour 4150 Barrel With Gas Tube

Description

Engineered for the 300 AAC BLKOUT platform, this barrel utilizes 4150 Chromoly Steel to provide the necessary durability and heat resistance for reliable operation. The 5.5″ length is paired with a 1:7 Twist rate to stabilize heavier bullets commonly used in this caliber, ensuring consistent performance. The contour profile is designed to balance weight and rigidity, while the Black Nitride Coating offers enhanced corrosion resistance and a low-friction surface finish.

Installation is streamlined by the inclusion of M4 Feed Ramps, which ensure proper alignment and feeding within the upper receiver. The barrel features 5/8 X 24 Thread at the muzzle, allowing for the attachment of compatible muzzle devices such as suppressors or compensators. Spiral engraved markings are located near the break point for clear identification of the caliber and twist rate.

A Custom Short Gas Tube is included to support a Pistol Length Gas System, which is critical for optimizing the gas impulse in a short-barrel configuration. This setup helps manage recoil and cycling efficiency, reducing stress on the bolt carrier group. The assembly is designed for integration into standard AR-15 style builds, providing a robust foundation for custom pistol or SBR configurations.