Pistoler or Pistoleer: How To spell?
The word Pistoler is misspelled against Pistoleer, a noun meaning "One who uses a pistol."
Pistoleer has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings Pistol & r which should not be misspelled with single 'E'
Wrong Spelling:  Pistol-e-r  Correct Spelling:  Pistol-ee-r 
Find more incorrect spellings of Pistoleer to spell right way.