Colt sells a 6920 Magpull edition... MOE handguard, MP BUIS, and 2 30 rd Pmags, and a couple other little goodies a first time owner won't notice in exchange for the round traditional forend, and the carry handle you can buy from a takeoff on gunbroker for ~50-70 bucks depending on patience. At that point the only thing I had to do was buy the bipod and mounting hardware, as well as optics and I was good to go.
I Also decided to swap out the coverplate for an ASAP sling mount, though I now think that was more work than it was worth with the clamshell style out there, and I'm waiting on a B.A.D. lever to install. That little thing is way too slick for 25-30 bucks.