We tested the following lights:
MODLITE PLHV218350
Arisaka 300 SERIES E1HT
Cloud Defense OWL
Streamlight PROTAC® RAIL MOUNT 2 LONG GUN LIGHT
Surefire SCOUT LIGHT® PRO
Surefire M300 Scout Light Pro
Surefire M300V Scout Light
Surefire X300UA
Surefire XC1
Surefire XC2
Crimson Trace CWL102
Inforce WML
Inforce WML TH model

Thanks to Big Country for the help on this one. It wouldn't of happened without him.