I have a Surefire C2 and M2 both with 3rd party drop ins, one is an EagleTAC ? though they
dont seem to be available here anymore and the other has a SolarForce drop in, both were
using rechargable 17670 cells but they to seem unavailable, though someone mentioned 16650
cells so have ordered some of those, in all they have fallen behind in my use of flashlights considering
batterys, runtime, brightness compared to the new Nitecores P20iX, SRT7i, MT2A Pro and
LoopGear SK05 PRO MAO amongst others I have, I do love how the SureFires look and feel but to me
the perfomance feels dated compared to newer lights, if there were newer drop ins available
here with a bit more oomph in performance then I would perhaps use them again, as of now they sit in
there original boxs as a reminder of what was.