I think i would say AA3, is more realistic then A.V.A.
It looks very generic.
But at least you can use vests that work and helmets fly off.
Lol, that doesn't mean it's super realistic. Also, the helmet wouldn't always fall off. I'm pretty sure that the Mich2000 and the IBH could take a bullet. Most realistic FPS are Arma 2 and 1, and AA3.
AA3 IS free you loving idiot.
lol AA3 is only free because of how bad it is. The dev team was fired after the publishers saw how crappy it was.