I've been searching the forums and am confused with trying to find a mount and light for my new M2. My gun store sold me a LaserLyte magazine tube mount to mount a Streamlite TRL1S but this round mount is too small and would not go on the magazine tube. Searching around the internet seems like everything is for the M4. I read on another forum that due to the inertia system the M2 uses that I shouldn't mount a light to the M2 or even think about adding a magazine extension. 1st post here...this Benelli M2 is my 1st shotgun so I am very new at this. Thanks in advance for any help.