Je Machine Tech Gas Tube Features The Je Machine Tech Gas Tube is manufactured from steel to Mil-Spec dimensions giving builders a part that drops into a pistol length gas system without fitting or modification. A gas tube carries high-pressure gas from the barrel s gas port back to the bolt carrier group so dimensional accuracy directly affects reliable cycling. Because this tube is sized to Mil-Spec tolerances it mates correctly with Mil-Spec gas blocks and carrier keys avoiding the gas leaks or binding that an out-of-spec tube can cause. That consistency matters whether the tube is going into a brand new upper or replacing one that has simply worn out after years of use. At just 0.02 lbs this gas tube adds virtually no weight to a pistol length upper keeping the balance of a lightweight AR pistol build intact. It is equally suited to completing a fresh build or as a maintenance part for an existing rifle since gas tubes are a wear item that can bend crack or burn out over time. Builders assembling a pistol length AR from the ground up can count on this tube to match Mil-Spec barrels and gas blocks without hunting for a compatible part. For sale at GrabAGun this gas tube is a simple dependable upgrade for any AR owner. JE Machine Tech Gas Tube Specifications Manufacturer: JE Machine Tech Model: Gas Tube Material: Steel Size: Pistol Length Weight: 0.02 lbs Available At: GrabAGun