As long as they only removed the steel line, you just have to replace it.
I had one a few years ago, but found that the steel hose alone was contradictory to how I was used to holding the gun.
Without the steel hose, that gun is only worth about $70.
You also have to watch out for parts loosening during use.
Two of my screws would continually come loose during play and the trigger retaining shaft would pop out and fall off occationally.
It was a great gun when I got it, but easily found things I would rather not deal with every time I used it.
#9 of 19 PBX LV1
Lime Dye Rotor
Lime PBX 68/4500 a tank w/Ninja Reg
for the #1 field in Chicagoland