I was gonna put this in the m8/hk36 thread but it was getting too ..cloudy. Anyways, many people have speculated on the difference between the two guns; the m8 and hk36. After many hours of discussion it has been concluded that the guns are way different, but in design they are extremely alike.
I will try to get all the specs on the guns later but check out this pic, it makes you think on how the US got their ideas for a future assault weapon.
(Or am I being and idiot and the xm8 came out first...dont think so.

)