mr-quickfix.vim (mr-quickfix) is a plugin of mr.vim which provides Mru and Mrw commands to record MRU and MRW to quickfix.
Use Mru or Mrw with copen like:
:Mru | copen
:Mrw | copen
Or specify a path to get local MRU/MRW like:
:Mru . | copen
:Mrw . | copen
Or
:Mru %:h | copen
:Mrw %:h | copen
Or
:Mru /some/path | copen
:Mrw /some/path | copen