That IS an odd looking beast! I don't know that you'll have a lot of luck with that though as it is a night vision sight. There's not a huge call for replicas of anything that isn't US either (just look at the lack of decent AK scopes) hence the wealth of Aimpoints and EOTechs.
Not difficult to take the guts out of a bog standard 32mm/40mm tube red dot and fit them into the space vacated by the expensive bits of the sight you're after. I realise that getting hold of one may not be the simplest operation for your mate. Perhaps I should have said "liberate with extreme prejudice" - just depends how good a mate he is vs how penny pinching/fascist/struggling his employers are.