523-18 Foresight M18 by Gehmann

Key Features:

• For Anschütz, Feinwerkbau, Grünig + 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