5.5″ 223 Wylde 1:5 Twist Contour 4150 Barrel With Gas Tube

Description

This 5.5-inch barrel is machined from 4150 Chromoly Steel and features 223 Wylde chamber. The barrel utilizes 1:5 Twist rate, which is engineered to stabilize heavier bullets commonly used in tactical builds. The contour profile is designed to balance weight and rigidity, resulting in a total weight of 11.3 oz for the barrel assembly. The exterior is treated with a Black Nitride Coating, offering corrosion resistance and a durable finish that withstands high-temperature operation. The muzzle end is threaded at 1/2 by 28 Thread, allowing for the attachment of compatible muzzle devices. M4 feed ramps are integrated to ensure reliable feeding from standard magazines. A custom short gas tube is included, specifically designed for a Micro Pistol Length Gas System. This configuration is ideal for AR-15 pistol builds or compact carbine configurations where overall length is constrained. The barrel features spiral engraved markings near the break for identification. It is supplied as a solid pattern barrel without a handguard, requiring the builder to select and attach a free-floating handguard system separately. The polished silver-colored cap at the opposite end indicates the chamber area, while the slender curved metal rod provided is the gas tube itself, essential for transferring propellant gases to the bolt carrier group. This component serves as the core of a custom upper receiver build, allowing for precise selection of gas system length and barrel contour to match specific performance requirements.