How to Change Hammer Spring in Walther Reign

Hey Swelfelo, I wanted to send you a PM but didn't see an option... I just purchased a Reign utx .22 and it didn't come with any type of foster fitting. Amazon foster fitting reviews have me a bit worried. I am brand new to air rifles and just trying to figure out what everyone else is using here. I was looking for the best version of something like this.


But some of the reviews are meh... I plan to fill it up using a GX-E-CS2 compressor