It is not an indent, there are space characters, an indent wouldn't have caused a problem, you must delete the spaces and replace them with a real indent(tab).
Edit: you also have this problem in your SMG.ini file, always use tab and never space to indent in cc, otherwise you'll get errors.
Here is the corrected version, I also added a few properties that were missing:
I also suggest you download and read that, it explains what each property does in a gun's ini, and it is much more detailed than the one on cortexwiki:
download/file.php?id=35285It was made by Major and me.