Key mod parts are becoming very standard and there are a ton of picatinny rails of various lengths available from a multitude of different manufacturers so you only need to put on what your going to use. A lot of grips, sling attachments, etc are becoming available in Keymod so you won't even require the added weight and bulk of a picatinny.
yes, I am thinking the same thing. the carbon hand guard is pretty sweet, but the Fortis seems like the more logical choice for weight and future barrel swaps. should also work better for some back up sights if wanted. the 14" Fortis shows as 14.75" which would probably cover the gas block at only 10oz.
the Fortis lists Keymods at 3 and 9 o'clock. is there any way to mount to the bottom at the front for an atlas bipod? this could be the deal breaker if there is nothing there, although I'm sure I could drill 2 holes and mount a pic rail