The Raptors Airsoft RTQ One-Piece Metal Outer Barrel is a precision-machined upgrade component that can help improve the durability and appearance of your airsoft gun. It is made from high-quality metal and features a sleek black finish that provides a tactical look to your gun. This outer barrel is compatible with most M4/M16 airsoft guns, and it can help increase your gun's accuracy, performance, and overall durability.