Dogfox,

The original part from my 1908 A grade was hardened--a mill file
will barely scratch the surface. The new part (an original white
metal Fox part) is relatively soft and metal removal with a jew-
ler's file was very easy. Since this part is subjected to high
forces during the cocking process I thought it would be wise to
harden it to minimize wear.

Thanks for your input

FOX SXS