AR-15 CQB build

I am building a new Close Quarters Battle rifle. I began with a New Frontier stripped polymer lower and added a lower build kit/fire control group. I am using a FAB magwell grip, FAB ergo pistol grip with battery compartment, and a FAB buttstock with built in mag-well. You can see the ten-round Lancer magazine in the stock. This provides a counterweight to the barrel and a ten spare rounds for your last ten chances. M-16 bolt carrier group and Bravo Company VLTOR Mod-4 charging handle. For the record, the lower is very light, but required pretty extensive fitting. I mostly used a nail file to remove the flash and sprue, but keep it in mind if you plan to use polymer for your lower.