The jaw is dropped to low. But the posing otherwise is good.
generic, and I’ll have to second Back_Slash about the jaw. Makes me think of an elderly person for some reason (the facial expression that is)
Also seconding Back_Slash for the rest of the pose, nothing else to criticize. Then again, nothing that really stands out a lot either, since there are heaps of pics of citizen and such models firing at off-screen targets.