Bob,
Many thanks - I will give it a whirl
I have some wider rear sight plates for my Baikal MP46-M & Tau7, and the FW65 has an adjustable rear notch.
( I have 4 mm foresight posts on the MP46-M & FWB65, and a 5 mm post on the Tau7 )
Have fun & a good weekend
Best regards
Russ