Help with 1902 Carbine

[Lugers down under]

Thank you all very much for your help and suggestions.

I think the best thing for me to do is wait until I have the Carbine actually in my grubby gun oil smeared hands so I can determine exactly what I need.
I will then post some photos to give a clearer idea to all those much more knowledgeable than me.

Once again,
Thank you all kindly.