You really don't know much about firearms do you, so it's not a M4 platform, it's a totally new invention MKAY, alrighty then.
To everyone else, it's a redesign and a good one, but not something unique.
https://www.youtube.com/watch?v=O5HY_TRov2c
Whilst the M16/M4 series and the HK416 and derivatives look very similar (and share many internal similarities) the HK uses a very different operating principle.
The M16/4 series use a distinctive gas system often incorrectly called "direct impingement" (it's more like a short stroke.system using the bolt as the piston) whilst the HK uses a more traditional short stroke piston mounted on top.of the barrel.
The differences.are quite pronounced.from.an.engineering point of view. I believe the bolt, carrier, barrel, upper receiver and gas system are all.different.
The controls and ergonomics are the same as the M16/4 because it makes.training much easier.