Menz 7.65 KAL Model II

[LeeBoy]

Hello Guys,
Just seeing if you could help maybe...

I have a Menz 7.65 KAL Model II
It's in beautiful condition but my father lost the firing pin. I've been trying to find a manual everywhere so I can have one machined but no luck. Can anyone help or point me in the right direction?

THANKS!!!