Did you buy a Keymod vertical grip or other accessory and then an M-LOK handguard?
Midwest Industries has the solution.
http://midwestindustriesinc.com/imag..._mlok2kmod.jpg
http://i1185.photobucket.com/albums/...ps86032c85.jpg
http://i1185.photobucket.com/albums/...ps6adf6b44.jpg
Thanks,
Troy
MI