If you are looking for a replacement for the flat metal base pads, you might want to consider aluminum base pads. EAA Corporation sells them. Check the following URL:
www.eaacorp.com/flash/high.htmlOnce on that page, select "Parts" and then select "MAG Followers and Bumper Pads". They show 3 colors. The ones I bought were pink ... a bead blaster removed the unwanted color.
Pachmayr makes some rubber base pads for the Browning HP that have been recommended to me. They glue on to the original metal base plate. Brownells carries them. I don't know how they fit ... this was suggested by CZ-USA.
Shoot safe, and have fun!
Ralph