Gehmann Rear Sight Adaptor for Parker Hale or Redfield

This adpator will allow you to use any regular Gehmann or most european rear sight iris to fit your Parker Hale.
Most recent european brand like Anschutz, Feinwerkbau, MEC, Centra, Walther and Steyr

Simple screw-in adaptor 

German Gehmann side Female M9.5 x 0.75 NC1.00
Parker Hale side, Male, M.40 x 10 Fine thread