03A3 Firing Pin Rod

[JGaynor]

I know that the very early Remington rods started out with a concave area just in front of the knob....just like all the '03's, Was this the same for early Smith Corona ? Or were they ALL straight with no concave area ?
Thank you.

I believe SC manufactured firing pins were the straight shanked, 3 piece variety as were replacements made at Springfield Arsenal and by At least one subcontractor, Standard Button Machine Co.

Regards,

Jim