The JGM-4 is unlocked for Chinese primary weapons through progression and is unlocked through Battlepacks for all other primary weapons. It is the first optic unlocked for Chinese DMRs, requiring only ten kills.
Aiming with the JGM-4.
JGM-4 attached to the M416.
A Battlelog portrait featuring a Chinese Support soldier displays them holding a QJY-88 with a backwards mounted JGM-4 scope.