Here is the final build. Specs are:
KE arms slick side reciever and WWSD 2020 lower
CMMG 5.7x28mm 16.1” barrel, BCG, and mags
Faxon 13” Carbon Fiber Handgaurd and A2 flash hider
Geissele super charging handle
Trijicon 4X ACOG
Final thoughts: Have not gotten to shoot it yet but looking forward...