Done all the mods.
Valve turn to match spring,
turned ridge in valve to centre spring,
drilled additoinal 6 holes in valve body to increase flow,
made a breach riser to lift by 3mm or so,
changed trasfer seal to paintball tube,
drilled barrel port to 4mm
Drilles the srock bolt probe to as large as it will go,
matched the traansfer port size to oval opening on probe,
polished trigger sheers,
made shroud using 15mm ID alu tube.
made stripper/silencer on front part of tube..
shoots like a monster. need to chrony her 1st though. only problem is that she shoots the shroud off. I taped up the barrel so that the tube fits tightly with a hard push onto the barrel. Now I want to use the rear sight screw mounts to attach the shroud to the barrel but I am worried that the screws will be sheared off or torn out.. or even the grub screw holding the barrel sheared off.. Any ideas on this would be appreciated!