Smith carbine hammer not working

[tailpipe004]

New member here from Allen TX
I just purchased a Smith carbine Model 1863. The rifle was in pristine condition. The hammer wasn't working, opened up the insides and there was small broken piece loose inside. Mainspring looks good. How does the mainspring attach to the tumbler?
picture attached of the broken piece. Where the best place to look for a tumbler? Thanks in advance. I welcome all comments, advice and general dog piling.

 

[tailpipe004]

got it all apart and I have a broken tumbler stirrup, any pointers on how to replace the correct way?

 

[tjiann]

S&S Firearms sells replacements.

 

[dave951]

Call either S&S or Lodgewood

 

[kelvinator]

Welcome and greetings from Hickory Creek TX.