Surefire 9p?

Do any of you guys run one on your m4 in an offset mount? Heard that sometimes the 3 cells have battery bounce and dont work great or break the bulb. Anyone have any pictures with a 6p or 9p on thier M4? I just want to make sure I have enough light I have an M6x on a pistol and it does 125 lumens and I like the output. Ive also wonderd about the L4 or 6p led defender.

I would not put the 9P on my gun (too long and no shock isolation). For size, weight and power, nothing can beat the new E2DL!

C4