I assume you've done a web search and did NOT find what you were looking for?

I searched Browning...I just come up with Bass Pro Shops. Did they buy Browning? But...there is a Browning Fishing website for Europe, and they offer spare parts. Not sure if they will have what you are looking for, but it might be worth a shot?
http://www.browning-fishing.com/SparePartService.html