I think I'd prefer the non railed handguard and just add a rail where needed.
There were only a few with the tri-rail, so I believe the majority will have the polymer hand guard.
Not sure where the above figure came from (on our barrel weight) but it is NOT correct... at least it does not match what I have myself measured.
From you guys.

I just took the (original) number you provided with me at face value without re-weighing it, but no worries (appreciate the correction, thanks). I would imagine it will be a few grams less with the optional threading. Also note that the weight of the factory upper was with the aluminium tri-rail and not the polymer hand guard (the hand guard is longer, so it could end up being a wash).
It definitely would look better with the longer 18.5 inch barrel thats for sure. Thats kinda why I found the XCR to look so ugly.
Agreed. The tri-rail probably makes more sense for a bipod, light/laser or other accessories. I'm still on the fence between the two.
Looks pretty sharp, but at $3k, that's Swiss Arms territory...
Nothing is in Swiss Arms "territory" except HK. By the time you factor in the lower that accepts standard AR magazines, new stock assembly and low profile mount you're easily in the $4k-range (the quad rail will put you over $5k alone, and we won't even touch on the weight...).
i really like the new style stocks that the ACR and SCAR are using
Yes, and I am finding it a bit easier to use after playing around with it for a bit.
Cool gun but the XCR jab was kind of sad. Do you really need to bring down another gun to make this one seem better? Maybe if this gun could stand on it's own merits I'd be more interested...
I would have thought that as the underdog most XCR users would have developed more of a sense of humour by now, but apparently not... This is my first impressions of the ACR, and as beauty is in the eye of the beholder I'll leave my first (lasting) impressions of the XCR for another day (and another thread). I'll leave it to someone more capable to post some range reports between the two, and then people can decide from there.
here's a good question though, since the ACR has a quick change barrel system, will it be still classified as non-restricted when you switch to a shorter barrel?
Nope, for the simple reason that the piston/quick-release assembly for a second barrel is basically unobtanium. So after you cannibalize the components for the NR barrel, you essentially have a 1kg paperweight. Assuming that you could find the components, you'd have to have it re-registered as restricted, though.