Tower Rat

Here are the full rifle. The site would not accept the right side muzzle, kept saying file too large no matter how much I resized it...

I agree the bolt is a rebuilt, I'm just trying to identify the other markings. Here are the rifle pics:

Also, since I believe my rifle assembly is as it left the factory (the matching serial number on the rear sight tells me the barrel was...

That's what I was thinking. It would still be interesting to know what or where the others came from. Thanks.

Can someone help me identify this model 98 bolt? I've found no serial numbers. Here are the pics: 1: Stamp on handle base which...