It's a bit laughably optimistic-looking to modern eyes, isn't it? Also, there's a lot of capability the XM8 misses out on completely, like mounting night vision devices. If it has a direct steel connection between the trunnion and sight, that would raise it in my estimation considerably, but I still think improving the M4 was the way to go. The XM8 was getting most of its weight improvement from the sight, anyway, so if they'd had any sense they'd have made a 1913 compatible version of that for the M4. One of the other major selling points of the XM8 was that it was supposed to be cheaper... About $600. Turns out, while at the time the M4 was about $900, once the solicitation opened up they got a lot cheaper... About $300 cheaper, in fact. Keeping the M4, of course, misses out on the whole point of the XM8, though, which was to make H&K money.