I've obtained a Savage 1912 22 LR when I was a kid that's a family gun and I always knew a part was missing. About 10 years ago I started trying to find the couple missing parts it needs. So far I've only found the rear sight, but there's at least one more piece missing in the breech, which I think is just the bolt, and since I've never seen it I don't know what it looks like or if I need more than one part. I'm hoping someone here can tell me what I'm missing and maybe where to find it. The gun won't feed a shell because the bolt is missing, but it cocks and fires and everything else seems to function.

Here is a picture of my gun:
https://imgur.com/a/pgOf9

Here is a picture I found years ago of what I think the bolt looks like:
https://imgur.com/a/2aoMQ

Here is another picture I found recently but the bolt looks different with a loop piece which I think is for a different model:
https://imgur.com/a/2kaMq

If anyone has any info on this I would really appreciate it. This has a been a real pain and I'd like to get this gun functioning once and for all.