Burris Timberline 2-7x and ex-high Burris tactical rings work quite well on mine. Light, bright and long eye relief so I can still stuff my stubby fingies around the charging handle.
Not a Norinco, but on one upper, I have a Burris 1 1/2-6 with Stoney Point knobs in med. rings on a riser; on another upper, a Falcon Menace 1 1/2-5, also med. rings on a riser. I put an extended latch on a charging handle, makes it easy to operate with the left hand.


















































