[Styrak]

They don't have to be CYMA (I run MAG midcaps in my CYMA AK74U) but any of these would do nicely. Depends if you want 47 or 74 style.

http://rsov.com/product.php?langId=1...=3577&cateId=0
http://rsov.com/product.php?langId=1...=3578&cateId=0
http://rsov.com/product.php?langId=1...=1616&cateId=0