I set out to build a 600 yard hammer. YHM Upper and Lower, M16 BCG with a WOA fitted bolt head to a WOA 16" heavy SDM barrel, 1:7 Wylde chamber, UBR stock, YHM Diamond Free Float rail, Geisselle SSA trigger, Wolfe springs, Burris Extreme rings and a SWFA 3x15. YHM QD Flash Suppressor and YHM...