I have used everything on my WASR's and my M10, that's one of the joys of romy rifles, anything fits.
Currently have a nice set of plum from Atlantic on the 10/63, and a Magpul stock (NOT the fugly Zhukov robot foot) on the M10, other than the needlessly complex attachment system, the Magpul AK stock is excellent, even has a nice storage compartment that fits a standard AK cleaning kit perfectly. Looks good too.