In order to get that AK angled look on the top receiver, I have cut my m4 dummy charging handle and rail and sanded it to a similar angle.
The new shroud
the result so far, PLUS new MIAD Magpul grip. note shroud will be upside down as in this pic most likely, it gives the angled front of a pp-19 that way. second pic has the top (bottom) rail added