Thread: gamo 600s air rifle.

was given one of these to fix.allegedly wouldnt fire ,but did for me albeit muffles.stripped it piston etc almosy seized in chamber ,.have cleaned everthing but cannot get the bloody thing back together.trigger sear wont hookinto notch on piston and ive got a feeling trigger may be poked.
any airrifle maestros in chchc who can guide me in the right way to get it going again?