This is a complete replacement kit for the stock hop-up unit. Including new screws and applicator arm. The chamber by itself will give you a better seal between your nozzle and bucking. These tighter tolerances will help give you a wider range of adjustment and help to eliminate your adjustment from wandering.
Does not include new hop up wheel
- High-quality aluminum construction
- Enhanced steel hop up arm
- Greater range of adjustment
- Improved air seal
Compatibility: TM/WE Hi-Capa pistols