Gehmann #510-PH Rear Sight Iris for Parker Hale

  • shorter still and adjusts over the wider range 0.5 - 3.0 mm
  • the fixed seat iris works with individually pin-located tempered spring steel leaves
  • aim point precisely maintained throughout the wider range of adjustment by introducing a new system of aperture control operated by varying the pressure of a steel tube against the central aim point - guaranteeing a perfect circle
  • light reflection kept to a minimum by use of matt finishes internally and externally
  • unique Gehmann patent not found in other irises
  • Parker Hale side, Male, M.40 x 10 Fine thread