HELP...What is this part I found on my workbench?????

[crashdown]

doesn't that look like it....looking like it goes between the buffer and the spring on the guide rod?

It does kinda.... but that pic looks like an aftermarket setup.
None of the pictures I've found of factory internals show anything like what I have, or what is in this picture.
I found where this pic came from, and the top one is the factory rod, but I didn't see any mention of this bushing. And like I just mentioned in my previous post, I just pulled a new one apart at Sportsmans and no metal bushing.
Also... IMHO the Sig is junk, plastic guide rod, cheap springs, pot metal, etc. Can't imagine they have a finely machined and blued piece of quality steel riding on a plastic guide rod... but I'm prepared to be wrong.
The damn thing does fit perfectly on the rod. I shot it again after cleaning it and it seemed to function as before.