I even sometimes play Garry's mod and I think could be a server which should be on issues maps like these
http://www.garrysmod.org/downloads/?a=view&id=41252 that would be cool if there would be few players and maybe some custom gun like colt 1911
http://www.garrysmod.org/downloads/?a=view&id=37500Disadvantage of that goes a little time to download files
Might try it sometime