The Sons of Liberty Gun Works QPQ Coated Mid-Length Gas Tube is a high-performance rifle component designed to withstand the intense heat and pressure of modern firearms. It is constructed from high-quality stainless steel and treated with a Quench Polish Quench (QPQ) salt bath nitride finish for superior corrosion resistance and surface hardness. This coating provides a smooth, non-reflective black finish that matches nitrided barrels and gas blocks while reducing the buildup of carbon and fouling. The tube is precisely bent to standard mid-length specifications to ensure a perfect fit and reliable gas flow in AR-15 and AR-10 platforms.