The LBE AR-15 Rifle-Length Gas Tube features a durable Melonite finish and is constructed from high-quality 304SS seamless tubing for reliable performance and longevity.LBE AR-15 Rifle-Length Gas Tube with Melonite finishMade from 304SS seamless tubing for superior durabilityGas tube roll pin included for complete installationManufactured in the United States with rigorous quality controlDesigned for AR-15 rifle-length gas systemsBuilt by LBE with American craftsmanship and precision engineering this gas tube ensures reliable operation for your AR-15 build or replacement needs backed by quality you can trust.