[BobWright]

For those of us who might not be so well educated on the subject, would you kindly explain the purpose of the hole?

Bob Wright

 

[BobWright]

It is there, after removing the retaining pin, to drive the firing pin from the hammer by inserting a punch in the hole and knocking the FP out. This was necessary with the fixed pin hammers. When they went to a floating firing pin there was no need for force to remove the pin so the hole was eliminated from the back of the hammer. Regards

Thank you for that. Pretty obvious the way you explain it, but then I don't have one of those at hand.

Bob Wright