HK Army 4500psi Regulator Piston Assembly (Low-Pressure 250-400psi Output) (GG08-02)

The HK Army 4500psi Regulator Piston Assembly (Low-Pressure 250-400psi Output) for Standard and HP8 Regulators and is recommended for any Airsoft players that use HPA air set-ups.

This is a direct replacement regulator piston complete with a pressure shim stack (250-400psi Output Pressure) for the HK Army compressed air tank regulators.

Compatible with and only works with HK Army Standard and HP8 Regulators.