^^^Robocop specked you a nice build for $1800ish.
For accuracy spare no expense in your barrel & trigger choice, the rest are style, weight, bells & whistles.
For hunting barrels I prefer fluted w/crown, no brake or comp, ounces are pounds.
https://kriegerbarrels.com/products#ar10
http://www.rainierarms.com/rainier-arms-ultramatchtm-308-barrel-16-6552
http://criterionbarrels.com/barrels/ar-10
http://www.lothar-walther.com/473.php
https://www.mcgowenbarrel.com/ar15-ar10-barrels/
http://www.jprifles.com/buy.php?item=JPSM308-16L10
http://www.shop.blackholeweaponry.com/308-Win-308B-caliber-16-length-AR10-308-16.htm
http://www.harrisbarrelworks.com/arcontours.html
Triggers.....
http://geissele.com/hi-speed-national-match-designated-marksman-rifle-dmr-trigger.html
http://pact.com/index.php?option=com_virtuemart&page=shop.product_details&flypage=shop.flypage&product_id=58&vmcchk=1&Itemid=1
http://www.elftmanntactical.com/store/product/elf-ar-10-308-trigger/
http://www.brownells.com/rifle-parts/triggers-parts/triggers/ar-style-308-drop-in-trigger-module-prod45084.aspx
http://www.brownells.com/rifle-parts/triggers-parts/triggers/ar-15-two-stage-triggers-prod70975.aspx
http://www.armalite.com/ItemForm.aspx?item=10309050&ReturnUrl=categories2.aspx?Category=dfc0f777-5c39-4edf-bb6b-90009c5adc2c
For your BCG you might want to grab this one...