All (item #'s) correspond to the Exploded Parts View on page 11 in the Bersa Pro Series Owners Manual
How to remove the Slide Catch (L&R) (item #30 & 31:
To remove SCR unhook the SC Spring (item #32) from the SC and frame then pull the SC free.
The SCL should slide free of the Barrel Cam Bushing (item #29). I had to use a punch to drive mine out.
You will not be able to remove the Barrel Cam (item #28) and the Barrel Cam Bushing. I think they are press fitted in.
How to remove the Slide Catch (L&R) (item #30 & 31:

To remove SCR unhook the SC Spring (item #32) from the SC and frame then pull the SC free.

The SCL should slide free of the Barrel Cam Bushing (item #29). I had to use a punch to drive mine out.

You will not be able to remove the Barrel Cam (item #28) and the Barrel Cam Bushing. I think they are press fitted in.