Yep, I want to know for all these reasons. I'm just saying that the game looks A LOT better with out the hud. It's more fun in my opinion. The only game that actually helped me with this was Americas Army. Also, I NEVER use the crosshair. It's just a matter of a button click away if I need it. Left Trigger.
Zooming down the scope.
But yeah, I'm not PRO and trying to show off. I make mistakes too many times in games for me to be pro, but when I am fully immersed in a game, that's when I get the most enjoyment out of it. The game is just soo smooth not to have the option. So yeah, I'll check the manual. RTFM!!