Ironic Pirate said:
I don't believe they exploded back then. They also took minutes to wind up.
Yeah, real black ops use those. Quieter than a gun.
Since when is an explosive quieter than a gun? Most of the reason guns are noisy is because of the exploding gunpowder bit... Which is designed to propell a small piece of metal, and thus substantially less powerful (and noisy) than explosives designed to kill people by exploding.
"Ranged" means aren't really quiet. Even with silencers guns are pretty noisy. The best bet is using a sniper at some decent range and going with noise masking.
I suppose a non-explosive crossbow (i.e.: NOT the one in this game) could avoid most of the noise, and subsonic boom, but I question both it's ability to pierce body armor at any decent range, it's ability to remain accurate at long ranges, and it's ability to get a quick (and silent) kill, instead of just stabbing someone who'd be screaming at the top of his lungs while bleeding to death.