Firing pin Remington Model 12 and 121 (ROUND- for the Transition Period) NEW

This is the firing pin for the Transition period in Remington model 12 and 121, right when the changeover from flat to round styles occured. It is round and fits in rifles with serial numbers just before or above 650,000 range on the Model 12. It fits the model 121 S, L, LR all serial numbers.