Sorry, best I can tell you is they were from a double gun, the were out of my parts box and could have been for any number of guns I have repaired in the past. I'll see if I can measure one if you like. I have kept parts from the competition guns I have rebuilt in the past for trap and skeet, could be from a Citori, Valmet, Perazzi or another gun I have repaired in the past. They were probably firing pin return springs since there was a pair. I can tell you they were 3 coils long with flat winds at each end and fit inside the bushing well. Since the pins in mine may not be the same as yours according to the drawing posted earlier it may be best to befriend a local old line gunsmith and see if he has something that will work for you.