Primary Weapon Systems Mk107 7" SBR piston gun:
It now wears an Aimpoint Comp ML2 and a Streamlight TLR-1s white light.
It's not "black" anymore, but both of these are mine (the near rifle is a custom Rem700 in 308 with a Gemtech HVT suppressor):
The AR is a VIS-2 upper with a Noveske 16" barrel on a Rock River Arms lower (tightest fit with this particular upper in my case) with a Timney match trigger (4 lb single stage.) This is my precision "3 Gun" AR that I use at 3 gun matches. It also has my Gemtech HALO suppressor on it.
I need to get some pictures of my other two:
LMT MRP (rifle length rail) with a 16" barrel and ACOG TA31RCOM4 on a custom marked lower.
Vltor MUR-1 upper with Daniel Defense 7.0" Lite Rail on a custom marked lower.