It really depends what system you on. On PC, the mods like on COD4 the Tacticle realism Mod. Made so many things more realistic. No jumping out of 2 story windows, no jump shooting, firing from hip had much much less chance to hit, If shot you would bleed out until you used medical attention to fix the issue.
As long as people try and play the game on consoles they will never get the true realism that is offered on the PC.
Like ARMA or Operation Flash point is the king on PC for realistic Military sim. PLUS ARMA has Track IR support. Which helps out greatly. I use it in ARMA and in my Flight sim like IL-2 and I could never go back with out it.
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