AAP01 ALUMINUM NOZZLE BLOCK7075 Aluminium material with CNC machined Material: Aluminium Item Code : CCT AAP01 028 **Important Notice** It may has a condition that your pistol cannot feed the BB bullet due to lightweight gas supply. You just simple remove a spacer to solve the issue. Alternatively, you may consult your gunsmith for advancing fitting to solve this issue as well. Increasing in FPS can be achieved; however, it may require other parts to collaborate and advanced