Feinwerkbau 1mm Peep sight Will fit Most European Rearsight Unit

Genuine Feinwerkbau part. #1780.725.1

Brand new replacement part

1 inch standard overall diameter (Gehmann #806 rubber eyecup will fit)

Peep hole is 1mm

Will fit all Feinwerkbau rearsight

Will also fit most European brand like Gehmann, Mec/Centra, Anschutz, Walther, Steyr and others with M9.5 thread size