Picked up a parts kit while I was out running errands today. Bravo Company Enhanced LPK with their PNT Trigger group, Mod 3 Grip, and Trigger Guard. Also got a Lancer Advanced Warfighter 30-round mag. I think I'm going to ditch the BCM pistol grip for a MagPul MOE or MIAD since I have piano-player hands, i.e. smaller palms and longer fingers, and the BCM pistol grip looks a bit on the large size for me. Looking at the website, the Mod 3 is the "widest" pistol grip BCM offers. Plus, the pistol grip is black, and I'm thinking about going with OD Green furniture for the build. I'll probably go with a MagPul polymer trigger guard for the same reason because I'm kinda OCD-ish about everything matching.
Still need the receiver extension and the parts that go with it, as well as the buttstock. And the tools required to put everything together. And i'm still not sure if I'm going to build the upper myself or just buy one off the shelf or (more likely) commission GunDoc to build one for me. So I'm not sure if I should get MagPul's Bev Block or just get Brownell's lower receiver vice block. Actually, scratch that: I just checked Brownell's website, and MagPul's Bev Block is only a few bucks more than Brownell's vice block, so that answers that question.