For what it is worth.If I am buying a used gun (air or otherwise), I don't want them with any modifications.Could be dangerous in the wrong hands, don't you agree?
I have been reading about that .22 for a long time.
By the time you put all that effort and research into finding a used one, you could just buy new.There are many discounts out there. There is a 10% from Pyramyd Air and also a 15% discount from Crosman. Most offer free shipping.As others have said, the PCP world is extremely dangerous if you do not know what has been done to them. People can tell you all day that they haven't modded them or been inside of them, but you never know. 3000 psi is a bomb waiting to happen that I would want to know the complete history on. New personally.