Here's my build from back in May. It's ran well so far, only one hiccup after ~200-300 rounds.
I ordered the Alexandria upper and lower from AIM along with a B5 Sopmod Bravo stock and Rise Armament RA-140 FGC.
From Palmetto State Armory I picked up the lower parts kit w/o FCG (p/n 1785) and the PA10 MOE stock kit (p/n 503665). I sold to MOE stock to my wife's uncle and installed the B5.
I eBay-ed a set of anti-drift trigger pins and and detent pins. I also got a set of knockoff Troy Battlesights.
The scope is a Primary Arms 4-14 ACSS. The manufacturer of mount is eluding me at the moment. I think it was ~$60.
Lastly, I lucked upon a used PWS FSC30 in the Equipment Exchange for less than $40, IIRC. Much niceness.
I plan on getting a Harris S-BRM bipod and a couple of the rail sections. I'm gonna get an extended latch handle as well. Once I get some booolits loaded up for it and get to the range, I'll get some pics up.