I wanted a metal receiver and FSB, so I picked up a barrel and BCG from CMMG, Black Dog magazines, and assembled it myself.

It's not a match gun, but accurate enough, sub 1" 25 yards with bulk fodder. Haven't tried any of the good ammo. It's been 100% reliable.

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]