Quote Originally Posted by mel h View Post
I bought another Gem last week, nothing remarkable but in decent condition with nice Eisenwerke trade marks. I've little interest in shooting it but like to check them out with a couple of pellets.
It cocked nicely but on firing the trigger jarped my finger with a hell of a shock as the piston reached the end of the stroke. Looks like it's due a strip down to see why it's doing it, has anyone here had this problem? If so what do I need to look for?
It's not possible to use it this way, the last time I felt anything this painful was getting the stick at school.
Mel.

Hmmm...sounds like the piston is bottoming out or hitting something...Look at the cocking shoe and how it engages the piston, it is possible that the cocking shoe has been put in backwards...either that or the piston seal is knackered (if there is one fitted...it may not be original) or if there is no seal just a machine fit piston then it may have a leather or rubber buffer washer in the front end of the cylinder which is damaged or missing...guess you'll have to open it up and have a look, Mel.