A new design nozzle valve which can smooth and enhance gasflow. It also minimises the gas loss to fasten the entire cycling. 100% CNC machined with 7075 Aluminum. Each packing serves with 2 different options of valve spring. CCT Nozzle Valve Spring constructed with high strength spring steel and hard coating to enhance it durability and stability. 2 different lengths of spring option lets professional user able to equip the proper one to optimise the performance. White Blue Spring is pre-set as balance on Joule power and recoil. Black spring is around 10% increment on Joule power. Highlighted features Aluminium 7075 material with CNC machined Ultra lightweight design Durable construction prevents flexing and warping under hard use Design to smoothing gasflow and minimizing gas loss Anti-scratch and Anti-freeze Perform smooth and consistent cycling Serves with CCT Nozzle Valve Spring CCT Nozzle Valve Spring: Made from High Strength Spring Steel Hard Coating Prevents Corrosion 2 different options of spring (White Blue and Black) Effectively balance the Joule power and recoil **Important Notice** Increasing in FPS can be achieved, however, it may require other parts to collaborate and advanced skill is needed. improper installation/fitting can shorten the life of the product. *PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts.