Hi, I think there was a Thread about switching G36 with Bizon Scope.
I think this is an allmost same effeckt, also you can use Dynamic Rage Soundpack, to change you scope on G36, but most Server are detecting this Soundpack.
This is all I know for right now.
I?m pretty sure you can change or alter some files to get this done, but I?m sure Mullah or Hubertus can help you more with that