Very sweet i remember seeing the hk 416 on future weapons. Thing performed well in what they showed. I believe hk also has 417 that uses 7.62 round not sure if x39 or 51 though but sweet none the less.
I found the Corps decision to stay with the .223 a big disappointment. Since Vietnam, everyone seems to agree that the .223 lacks penetration and stopping power. The 7.62 rounds seem to be a more logical choice. Our enemies weapons of choice almost always are 7.62 X 39 platform. We're not out there hunting prairie dogs and coyotes.
I thought the SAW was an M249?
M249 SAW (Squad Automatic Weapon)
Now I've heard, and only internet scuttlebutt, that the M249 was being a finicky pain and not reliable in the field, but also heavy, thus the reason for the replacement.
Personally, the idea of area supression arises the concept of a relatively constant volume of fire, not 30 rounds, load, 30 rounds, load, 30 rounds, load, 30 rounds, load. Maybe a reliable, sand proof STANAG drum mag for the HK that might migrate it's way to civilian hands?