The evolution from the last pic. LVPO still hasn't arrived from China, but the MK18 Mod 1 now sports a Vortex Crossfire, with KAC style flip up front and rear sights, the Mod 0ish has the carry handle and the 416 has an EoTech EXPS3, as well as an element PEQ15.
Dremeled down the finger groove on the Mod 1 too, and abused it with sugru. SOPMOD stock added and the VLTOR style stock gifted to the 416 to help with the two tone look.