Winchester Model 12 Hammer Spring Guide Rod Shape

[freedom-lover]

Continuing with my Win M12 project, I tried replacing the hammer, spring guide rod and spring with NOS USR parts. The new guide rod has a slight bend to it. The old guide rod had a substantial bend to it. With the new guide rod/spring in place in the trigger housing, the hammer will not stay cocked. I looked on Ebay at used hammer/spring guide rods listed for sale and they all had the same slight bend to them, not the substantial bend my old part has, so I am guessing the slight bend of the new part is correct. Is there something wrong with my trigger guard? How did the old guide rod come to have such a pronounced bend to it? Did the factory do that?

[Cuda440]

look at the placement of the sear notch on your old hammer vs the new one, along with the scribe marks on the old hammer. Kinda looks like there was a trigger job done before, the new hammer is probably not compatible with a modified sear or trigger that the old hammer was installed with

[freedom-lover]

Hmmmm, looks like a may need to replace the trigger, too.