“Assuming we’re seeing pics of the actual rifle, yeah it has open sights, no scope. A scope would in no way be necessary to make a person-sized head shot at 130 yards, or so.”
The picture of the shooter shows him wearing glasses.
Did he have contacts or glasses on for the shooting, or neither?
What was his prescription?
Near sighted?
Far sighted?
Pic of him laying flat on his stomach on the roof, with his head up and holding the rifle, shows him wearing glasses.