I recently ordered a set of 5 from Falcon Tactical Flashlights out of Del Mar, Ca. No instructions accompanied their arrival. I've called 5 times over the past 10 days to have someone email the instructions and I keep getting the run-around that upper management has been informed and instructions will be emailed to me. Has anyone else encountered such pathetic customer relations? I will return them if all else fails. This is just a cautionary alert to those who might be thinking of buying them.....