Forgot to put my build in here. Going to the range this Sunday, can't wait. It weighs in at 10.8 lbs with an unloaded mag as pictured. 

-Tactical Machining TM-10 lower

-Tactical Machining LPK

-Phase 5 EBR

-BADASS ambi safety

-Raddlock bullet button

-Magpul MIAD, UBR, LR 20 pmags

-DPMS upper receiver with chrome DPMS BCG

-Rainier Arms select 18" barrel 

-SWFA SD 16x42 scope mounted in ADM Recon X 20moa mount

Future upgrades (summertime):

-Gisselle trigger

-Troy, Apex, or JP Free float

-Battlecomp BABC

-a good bipod.