Japanese training rifle

A few years back I bought a type 38 "Naval training rifle". I've been trying to get it working and noticed that it may be missing some bolt parts.

Here is a picture of the bolt...

Attachment 46126

Here is the whole rifle...

https://www.milsurps.com/images/impo...0/02/T99-1.jpg
https://www.milsurps.com/images/impo.../02/T991-1.jpg
https://www.milsurps.com/images/impo.../02/T994-1.jpg
https://www.milsurps.com/images/impo.../02/T992-1.jpg
https://www.milsurps.com/images/impo.../02/T993-1.jpg

Seems like a spring and possible a few other items may be missing.

Anyone familiar with this bolt?

Thanks

The firing pin spring appears to be missing. Could you show a close up pic of the top of the breach where the gas release hole [s] are and a pic of the left side of the receiver where any serial number and inspection marks might be?

Chuck