Ballistic Advantage AR-15 Gas Tube Features The Ballistic Advantage AR-15 Gas Tube is finished with a Melonite coating that provides improved resistance to heat and corrosion compared to a standard uncoated gas tube. That coating matters because the gas tube sits directly in the path of hot combustion gases cycling the action so a more durable finish translates into a longer service life under sustained firing. At 15.125 inches this tube is sized for rifle length gas systems a popular configuration on full size AR-15 rifles that benefits from a longer dwell time and smoother cycling. Built in Black the finish also matches the look of most factory and aftermarket AR-15 components. A roll pin is included with the gas tube giving builders everything needed to complete the installation without sourcing a separate hardware piece. Ballistic Advantage manufactures its gas system components to close tolerances which helps ensure proper alignment with the gas block and bolt carrier key during assembly. For anyone building a new AR-15 upper or replacing a worn or damaged gas tube on an existing rifle length system this component offers a straightforward durable upgrade. The Ballistic Advantage AR-15 Gas Tube in rifle length is available for sale at GrabAGun. Ballistic Advantage AR-15 Gas Tube Specifications Manufacturer: Ballistic Advantage Model: Gas Tube Type: Gas Tube Compatible Hosts: AR-15 Length: Rifle Length 15.125 Finish: Melonite Color: Black Includes: Roll Pin Available At: GrabAGun