There is my new plugin for AWP restrictions!
Hope you enjoy.
SourceMod: 18.104.22.168 (new sourcemod support)
Plugin restrict AWP by the number of players on the server.
22.214.171.124 - Initial release.
126.96.36.199 - Minor bug repair.
188.8.131.52 - Added Cvar configuration.
184.108.40.206 - Spectator players bug repair. (Final release)