This AR-15 mid-length gas tube is constructed from durable stainless steel for reliable performance and corrosion resistance in your AR-15 build or repair.AR-15 Mid-Length Gas TubeStainless steel construction for durabilityMid-length gas system compatibilityCorrosion-resistant finishStandard AR-15 specificationsEssential component for AR-15 mid-length gas systems providing reliable gas operation for consistent cycling and performance.