High Flow Valve Blocker is re-designed and suitable for TM/WE Hi-capa & G17 series at the same time. It is also the perfect partner for CCT Aluminum Loading Nozzle series. With the high flow design, the gas flow is smooth and stable to the blowback action. The 7075 Aluminum can increase the durability which prevents flexing and warping under hard use when comparing to the original plastic one. Highlighted features Aluminium 7075 material with CNC machined Ultra lightweight design Durable construction prevents flexing and warping under hard use Design to smoothing gas flow and stable gas flow Anti-scratch and Anti-freeze Perform smooth and consistent cycling Attention & Installation Guide: Strong Screw glue is needed for installation. Use a drop of screw glue when installing the screw and wait for it to dry out overnight. Damage could be caused to the screw thread if screw glue was not used. *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.