I'm looking strongly at these two Noveske uppers: http://noveskerifleworks.com/cgi-bi...=16-556&cat=123&page=1&search=&since=&status= http://noveskerifleworks.com/cgi-bi...lrb-556&cat=138&page=1&search=&since=&status= I want a lightweight upper ... I find the long, 4-sided rails very top-heavy. What I really want is light weight, plus the ability to add a light and laser. That's it (at least, for this build!) I'm leaning towards the upper with the simple, standard M4 handguard. But I can't figure out how I could attach a light / laser with this setup. Is it possible? Is there a downside to the M4 handguard, so much so that I would be better served with a shorter, 4-sided rail? Sorry if these are simple questions. This is my first build. I'm sure I won't get everything perfect the first time out, but just trying to get something I can learn with. Thanks for all the help. Cheers!