Feinwerkbau Feinwerkbau FWB Peep sight

1 inch standard overall diameter (Gehmann rubber eyecup will fit)
Peep hole is 1mm
Will also fit most European brand like Gehmann, Mec/Centra, Anschutz, Walther, Steyr and others with M9.5 thread size

$ 25.00 CAD