I think the MG's in RO, particularly the vehicular ones ( and in some cases the other guns ) ironsights are a little unrealistic. It's like the user is constantly looking perfectly down the sight, and of course there wouldnt be any weapon sway, but i doubt that a machine gunner would constantly look down the sight, more realistically they might be nearly looking down it, still with the function to go ironsight. It's hard to explain, i just think maybe hold the player's head higher up.