SP101 Wolff spring swap out

[tuckerdog1]

Okay, up front, I'm pretty clueless about working on the internals of my handguns. But I wanted to try & reduce the weight of the trigger pull on my SP101. Got a reduced set of springs ( 9 ,10 & 12 lb hammer springs and I believe 8 lb trigger return spring ) from Wolff. Changing out the hammer spring was a no brainer. But the trigger return spring looks to be another matter. Unless I'm looking in the wrong place, this spring is encased in an enclosed metal housing. How do I access this to swap out?

Thanks,
Tuckerdog1

 

[1 old 0311]

Actually I just say this on a post at www.czshooters.com, or www.czforum.com. Ck them out.

Kevin