I am getting ready to do my first build and decided to go with a 6.5g. I have been researching a parts list for days and my head is spinning. I was thinking it's just a 556 upper/lower with different bolt, barrel and brake?! I'm seeing dedicated 6.5 uppers as my research goes on. Are these just the 556 uppers with 6.5g or 7.62x39 bolt?
What is or would be your parts list???
This is what I'm thinking, I will be using it for everything from CQB to 900-1000m for fun and white tail hunting. Looking to spend $1500ish on parts minus optics

Spikes/Mega 556 upper/lower

Spike lower parts kit

JD BCG (may be a little steep on the price tag for my build)

Geissele trigger

18-20" barrel- not sure which

Seekins SAR 13" hand guard

Magpul ACS or Vltor Emod