470Rigby,

Great pics of the Jeffery and the Rigby.

I notice that the Rigby also has the famous Bissell rising bite third fastener. I have always thought that system was an elegant way to provide another bite.

But my question: What is the finely checkered apparatus on top of the Rigby's rear tang where one would usually encounter the safety slide? It almost looks like the opener on a Darne shotgun (which I know it's not!)

Regards,
CptCurl