Uberti's .78″ “Firing Pin Stop” pin, and the stronger “Firing Pin Extension Stop” (retractor).
I was under the impression that Winchester only used the pin on the .22 cal. models and used the retractor on the other models.
It appears that Uberti, as well as Miroku both use/used the pin for all cartridges. Uberti switched to the plate for the 66′ and 73′ but I don’t know when.
Uberti Parts uses the following terminology on their parts list;
Firing Pin Stop (pin)
Firing Pin Extension Stop (retractor)
Winchester’s 1875 catalog (retractor)
“Firing Pin Extension Stop”.
The Pin
In this photo you can see the abuse the “firing pin stop” takes. Not much longer before it would have failed (44-40,)
“Firing Pin Extension Stop”.
The Retractor
The “retractor” appears to have been used in all original 73’s from what I can find so far.
An Uberti that shows the use of the pin.
An example of a “retractor” used in a 76′
Maroku 73′ using a pin
An original 73′ showing the use of the “retractor”/”tab”.
An original 73′ shows when the pressure built up in the chamber, it blew the barrel and not the action. The firing pin extension appears to use the “retractor” rather than the weaker “pin”.
This 1876 advertisement in Forest & Stream shows the “tab” sticking down…as well as Winchester’s own 1875 catalog.