Let me explain what OP means, if bullets came from the barrel of the gun, you'd find your bullets often getting blocked by obstacles. It does this in Arma 3.
When the bullets come out of your character's eyes, you might see a player just poking his head out while leaning with the gun hidden behind a corner. (but still being able to shoot you)
Yeah, one of the two games of pvp I played, a guy with an svd had the perfect spot and nearly singlehandedly took down my entire team respawn after respawn, me included. Safe, rush, didnt matter.
The only reason he didnt solo us is because his teammates rushed in when they realized we couldnt move.