It's not advised to do this in your main modded map as you may have quite a bit of unused/corrupt stuff left behind.
Did you clone the chunk or copy/paste them from another tag?
Take a look at your new chunks in the meta editor, they should look the same as the other chunks. If anything only the offsets should be different.
When I was making this video, I found that cloning chunks here would corrupt both the LOD/Perms and Parts/Sections reflexives.
I had the LOD values in the thousands, and the sections reflexives were just way to fuckered to get anything from them.
Same thing happened when I copied once and pasted several times. The only time it worked it when I copy/pasted a single chunk at a time or the entire reflexive.
Although I never attempted to extract the model from it because I knew it would fail anyway.
Edit: Yes, it can be done with the sniper. I did it exactly as follows:
- Duplicated the first person model tag for the sniper rifle.
- Copied and Pasted each chunk, one by one, until I had 5 chunks each.
- Extracted the model to a folder.