For sale is a PS90 barrel and shroud. I recently SBR'd my PS90 and used a CMMG barrel, so the old barrel is up for sale! This was not a professional job, but it went really well. I dare say a professional could not have done much better!
I don't know the round count as I am the second owner, but the rifling is strong and I've only put about 500 rounds through it myself.
I'm asking $150 shipped to your door in the lower 48. Prefer paypal or USPS money order.
Now for pictures! Sorry about the (lack of) quality.
Shroud and barrel:
The blind pin slot:
Rifling (I really struggled to get this picture, I'm not happy with the end result as the bore is bright and shiny, but this is the best I could do):
Slight scuffs on the shroud, the only damage that resulted from removing the barrel: