when using the Gerendel with silencer andsuing SINGLE FIRE the silencer does not reduce the noise what so ever. however when using in burst fire mode the silencer works -.-
its just your sound, the silencer only does a specific job: keeps you in stealth longer whilst firing cloaked, I can always hear a silencer from halfway across the map. Sound was never an issue for online play.
I noticed the same thing. I don't know if it just sounds to me like it's unsilenced or if it's like that for everyone. It's amazing some of the bugs that can pass QA though, they obviously didn't test it out.