Yep , you could turn sideways, close your eyes, screw up your face, stick a finger in your ear , balance on one leg and whistle dixie....when you pulled the trigger, the perp would be hit.
At that range, the question isnt "Can I hit him?", but "Can I hit him before he sticks that bloody great faffing knife in my ribs?"
The sights being of a far lesser importance than the number of rounds left in the mag, their individual knockdown power and how fast you can fire them off.
Centre of seen body mass just about fills the entire field of view.