444, how often do those rails and that light come in handy for hunting? Deer use cover and concealment in your neck of the woods?
I don't think a scope counts as ninja-ing something out.
Unless you're going to mount a light or a laser (the laser being primarily useful for use with night vision goggles, a requirement few of us have), you don't really need the rail handguards. Seems like they'd just add weight if you were going to put them on just to have them on, or just to add a vertical grip, like some people do. (Isn't there a less bulky way available to attach a vertical foregrip, if one really wanted one?)
Honestly, my favorite M16 variant was always the A1, with the triangular handguards. It had a 20" barrel and was still lighter than most 16" postban carbines.
(I always seemed to get saddled with a Hydra-Matic, though I've seen Colts, including some ancient AR-15 conversions, and even a few H&R rifles. FN makes the A2s and A4s, and probably the A3s. Colt makes the M4 carbines.)