Wondering if there might be someone that works on the Old Savage, Stevens Marksman No.12. single.
Could maybe rummage through a old parts bin...
Seemed to have misplaced the other half of my firing pin.
OD is 4.7mm
https://www.milsurps.com/images/impo.../dXmvr0c-1.jpg
https://www.milsurps.com/images/impo...seJPjpg1-1.jpg