I found this flashlight at Target for $4, its a 2AA host and takes PR bulbs. 2 CR123s and a spacer fit with no modding, and i bet i could get to 3 with modding, it barely misses. This has become one of my favorite mods because its cheap enough to use as a loaner and all parts are easily available in stores. It produces a very white beam
http://www.robbinsinternational.com/outdoorgearstore/images/energizer-brilliant-beam-flashlight.jpg
Parts required:
2AA Everready: $4
2 123 Cells: $5
3 cell Mag White Star: $2
Screw/washers/tape: $0
Total: $11
The reflector on this unit is different than I have seen:
Output compared to 2D mag incan on fresh batteries: (mag on right)
http://www.robbinsinternational.com/outdoorgearstore/images/energizer-brilliant-beam-flashlight.jpg
Parts required:
2AA Everready: $4
2 123 Cells: $5
3 cell Mag White Star: $2
Screw/washers/tape: $0
Total: $11
The reflector on this unit is different than I have seen:
Output compared to 2D mag incan on fresh batteries: (mag on right)