There is also an angled plate set in the forearm iron, that actuates the tips of the cocking rods when the assembled gun is broken open to re-cock the tumblers. that bears a closer exam, as it can be installed either position, and locks to the iron with a threaded machine screws- the head of which must be flush with the counterbored threaded locating hole.
If this OO has the bushed firing pins, as does my 1905 12 OO grade "parts gun", it most likely does not have the small bronze set screws, those are more often found on 2(E) and higher graded pre- 1913 Smiths.
If you cannot remove the bushing(s) to check the firing pins for dims. (against those shown in the brophy book on mechanics of Smith guns)-- you are S.O.L.-- and if the firing pin(s) are broken and encapsulated in the bushings, you are s.o.l. big time- sorry, one of the hazards of Smith ownership-- RWTF
