Hi I’m after a bit of help/advise on how to remove the valve section at the rear of the pistol and also there is a pin that protrudes from the piston part that goes into the barrel sleeve on my Air Match mod 600 side lever target pistol, I was given the pistol by a friend as a non working project the seals have gone and need replacing it’s all stripped apart from I can’t get the rear valve section out and the little silver coloured pin that holds the side lever into the compression tube? So any help on how to get this final part stripped is gratefully received

Cheers Andy