It's a Bushmaster wearing BDUs. Remington recently tried to go to war but lost the M4 contract to FN so I imagine it's business as usual in Ilion, NY.
Anyway, no special reason to buy the Remington AR.
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
US Army 1966-69, VFW Life Member, Retired Geek