kac stoner piston
 

Recently got my stoner back from a gun doc (stripped teeth on piston)
changed piston and head with an shs. The gun was returned but no compression I read somewhere that the piston and head should be bore up. So here is my question can I just put back the original Piston head which seems in good shape it is aluminum?

Yes.

Seems rather shady that they didnt test it

Great thanks ! just want it to work
and yes it was shady.