Title explains it all.
This is a guide to help you with adjusting regulator pressure and hammer spring tension on Performance versions (externally adjustable pressure regulator and extended stock with adjustable hammer spring screw) of Prophet / The Priest II.

https://www3.rtiarms.eu/prophet
https://www3.rtiarms.eu/priest2
https://www3.rtiarms.eu/reg
https://www3.rtiarms.eu/stock