User blog comment:Griever0311/Okay guys, RIGHT NOW.../@comment-1913186-20100610001207

It's kind of like the ACR. Although not as good because the XM8 can not change calibers(?), it was a "modular weapon"(?). Also, it was a joint-project between the US and Germany...like most things. Also, I heard the XM8 is extremely comfy. I think that's PART of the fascination, idk.