Yes ... most desirable.
The EX88 was the first 'proper' air rifle I bought my daughter all those years ago. It boinged a bit and out of the box was a tad ott. But a strip etc cured it all to give a very sweet rifle. One issue was the plastic piston sleeve for which the end broke off .. the end that sits flat in the end of the piston. I remember mentioning this to AA at a game fair (Midland, early days???) and they sent me a new sleeve.
Cheers, Phil