DickHynkel

You can detach the wooden handguard by painting it black. This allows you to attach the handguard rail (which can now be painted green) but it doesnt take any attachments, so at this point it is purely cosmetic: http://imgur.com/a/bGw4s

The Kashtan scope is side-mounted and the 47u doesn't have the railings/brackets that other AK's have. Best of luck to your nephew. Oh, and it's Finnish Defence Forces, big difference :P

My guess is it doesn't fit. What bothers me with the Kashtan is that they didn't make it tritium illuminated like it really is:http://russianoptics.net/1P78Kashtan.html

If seeing your character really is that much of an issue why not implement 3rd person camera that activates when you are idle for some time.