I like it!
I think the two tone black and green work well together. Mine is a gray that matches my surplus mags. Waffen werks painted it with a KG gunkote and I think it is a good match.
I agree with Andrew about the muzzle device, at least look at bonesteels adapter so you can change them out later. Mine is pinned and welded so I will not be changing it anytime soon which is good that I do like it.
I had a Eotech 516 on mine but felt it was a little to high. I have since switched to a TRS-25 and like the height better but miss the eotech reticle, oh well. I also have a Fab Defense M4 VZ-SB stock and I like it , it is a rock solid piece. It does have the downsides of weight and the AR style stock when folded partially blocks the trigger housing. I have a beaver barf wood stock on the rifle right now but plan to build a VZ to mount the Fab on.