I'm going to have to sell one of my piston ARs to fund the upgrades I want on my Colt 6920...
Daniel Defense 12" Free Float Rail
Daniel Defense Low Pro Gas Block
Geiselle SSA-E or LaRue MBT2 Trigger
LMT SOPMOD Gen 2 Stock
Sights
When I get the rifle finished I'm going to krylon it. I'll post a "transformation" and/or "paint your rifle" thread.