Left4Dead 2 and Portal 2 and CS GO Mounts

Have any way to Mount Left4Dead 2, Portal 2, CS GO on SRCDS/Gmod Client?

Any addon that do that?

Those particular games are on a NEWER version of the Source engine. GMod isn’t up to date I don’t think. I have the same problem and I just live with it. Maybe Garry will update it with the Kinect thing on Thursday.