light mount

I’m looking for some suggestions for mounting a light on my colt 6920 with stock hand guards. I was thinking about using a Midwest Industries mount along with Viking tactics mount but not sure if they will work together . Any advice or input would be appreciated I have a class in a few weeks and need to get it together.

http://m4carbine.net/showthread.php?t=23695&highlight=elzetta

+1 on the Elzetta FSB mount:

Thanks that helped.