Type 99 Screw Staking

I'm curious about this, since I came across a series 1 Type 99 (serial 98xxx, so a late one). I was originally going to take the gun apart to clean it up and inspect it, and probably part it out as the finish is pretty tired, and the monopod, dust cover, and AA wings my reference says it should have are long gone along with the matching bolt even though the bayonet lug/front band match the receiver.

However, on inspecting it I noticed most of the screws that hold it together are staked, the only major exception being the the left side band screw. However some of the stake marks don't seem to line up perfectly and one of the screw heads has some wear. Some of the stake marks look obviously untouched, but I'm wondering about some of the others

https://www.milsurps.com/images/impo...g5rbpnq8-1.jpg

https://www.milsurps.com/images/impo...on6igknu-1.jpg

https://www.milsurps.com/images/impo...wwilyxhy-1.jpg

https://www.milsurps.com/images/impo...gmkhcrly-1.jpg

https://www.milsurps.com/images/impo...aipmtzib-1.jpg

https://www.milsurps.com/images/impo...67mfiu4t-1.jpg

Any thoughts on this? The front band looked like someone has tried to take it apart but the screws don't move either way. It's just the way the marks don't quite line up with the slot on the head that have me wondering. If it's original I'll leave it alone.

I think I'd leave it alone.

Cipherk98, Yes, Don't take it apart. From what I can see the screws are nicely staked and unbuggered-- rare to find like this. Is the mum present? Salt Flat

No mum unfortunately. Nice to know it's staking, and thus stock is original though. Biggest shame is the mismatched bolt. I'll leave it as is, wipe it down with oil and either set it aside or perhaps sell/trade it as it is. I did shoot it and while it groups well the sights need some adjustment (probably due to wood shrinkage/bedding) and I don't want to touch the front sight as it also has it's original index mark from when it was sighted in.