A smith under the name 'Rusty Marlin' on Accurate Reloading used to make the best Rigby style bolt peep I have seen. I bought one of his first ones and am very satisfied with it in all respects,construction,finish,accuracy,etc. Reasonable price. just requires cocking piece be dovetailed and he used to do that also.
That's the guy referred to/linked to in the second posting in this thread.
