Rigging a new AR

[Finfeatherfur]

Ok, I'm rigging up a new AR, one because they are fun to shoot, and two because you can never have enough firepower. This one is being rigged to be lightweight, since my kids love shooting them and yet still be practical. Right now the gun has been built, test fired, and can dump a 30 round clip in 1.6 seconds, yet, still weighs in less than 6 pounds(5.7 actually w/ no mag).

I have a flatop upper, with a small rail on the front for a light. I was thinking of going with the Eotech, but came across the Mepro 21 sight that is used by the Israeli military. Basically, it is afiber optic 30mm red dot sight, but does not require batteries for nighttime use. I did not want front or rear iron sights on this one, which is normally used as a backup to sight sytems in the event of battery loss, or failure - thus it makes since. I do not like mounting scopes on AR's for many reasons, but mainly they are virtually useless at night.

So, does anyone here use the Mepro 21?