Z-PH510+SB510 Gehmann Base Body Rearsight Iris
Same as
510, but
without the thread adapter. Equipped with a direct screw-in thread
to accommodate diopter optics (Itm. No.
50300-0 &
50309) or matching thread adapters
for Redfield-Parker-Hale, Sauer-Busk, and Karabiner Model 31
