Gehmann Front Sight Unit 18mm
Gehmann Front Sight Unit 18mm, Gehmann Front Sight Unit 18mm For Ansch tz, Feinwerkbau, Gr nig + Elmiger, Steyr and Walther (needs spacer for Walther base !) Extremely short - 26mm - to allow use of irises and not exceed I S S F overall length rule M 18 thread For use with drop in elements