I bought my first AR several months ago w/carry handle. I regretted it and just purchased
a CMT flat top from here
www.globaltactical.com for $88! The flat top will give you much more options, and may
even raise perceived value. There are no cons that I know of. If you're going to add optics in
the future...then this is a no-brainer - go flat top! As far as iron sights go, I just got an LMT
BUIS...expensive as hell at ~ $120, but a real beauty. There are much cheaper alternatives
that should work just as well if you want to save cash. IMHO, I would probably go with a fixed
BUIS and not the flip-up type. For optics...two great choices: Eotech and Aimpoint.
Both of these are battle proven and have good to great battery lives. If they do fail, you've got
your BUIS that co-witness. I hope this is of help, and welcome to the site!