I'm going to guess it doesn't, but I really love using it on all of my guns.
BipBapBam Posted 12/6/2012 10:37:55 PM
It could be argued that you're a bit more accurate since it removes muzzle flash. Besides that, not really.
cwatz12 Posted 12/6/2012 10:41:31 PM
It makes your guns look cool.
As for campaigns, when you are in combat it never matters, but if you are doing stealthy infiltrator stuff, it is more less required to prevent setting off an entire base or something.