Posted this in the "AR" section then realized this thread is here.

Here's my first build:

Magpul CTR butt stock (milspec)
Superior Arms Stripped lower
DPMS LPK
M&A Parts Complete Upper
Fail Zero BCG
BCM Gunfighter Charging handle mod3
Daniel Defense 16" Cold Hammer Forged Barrel, 5.56 1/7 twist
Nordic Components XL Free-Float hand guard (15.5")
Optics: Vortex Diamondback 4-12x40 on a Burris QD PEPR mount