Mike, supposedly there are 2 types of "strikers" and 2 types of "firing pins". The strikers are in the early models, through the 219/220A. Starting with the "B" suffix 219/220, the action was changed to a hammer & firing pin arrangement. In both strikers and firing pins, according to factory information, the rifle was smaller than the shotgun striker/firing pin. So far, that makes since.....but.....what about the "Utility" guns with both a rifle and shotgun barrel? I have 3 genuine "Utility" guns. One has a small thin striker/pin, the other two are large. So.....
As I have said before....who know??? I agree, about a machinist making small parts like this. I think Numrich and Sarco do this from time to time. I was able to get a firing pin for my 220B. While looking, I also ordered one for the 219B and later guns. Both these pins are on page 51 of the revised edition of my book. I have a machinist friend who makes all small parts for Japanese rifles and pistols. His service is in great demand.
