baader zoom question

[a10ken]

good morning folks, i could do with some help regarding my hyperion zoom, i bought it new recently (old stock) from ABS, i also bought a winged rubber for it, i can find no way to fit this item, i have looked on the mk4 instructions and the mk3 instructions

and both say to remove the fitted eyecup and unscrew the top to expose the mount for the winged cup, mine does not have this (or any MK number for that matter) do early hyperion zooms not have this fitting??

[a10ken]

done a bit more research and as it has a chrome barrel its most likely to be a MK 1 and they (and mk2,s) do not have a removable eye cup.