thermal guy
Flashaholic
Yes I also have to screw the head down almost all the way when I use AA's. 51.6-51.8 MM are the length of my 17500's. I'm using AW's. I think some vape shops still carry them.
ultrafire 17500 1300 mah are a little to long.
ultrafire 17500 1300 mah are a little to long.