I just recently acquired a DPMS .308 Oracle. So far, I have added:
a lower picatinny rail to the botttom of the glacier handguard,
a one-piece scope mount,
a temporary scope (Simmons Whitetail Classic 6.5x20 x 50 AO) and
a temporary Grip-Pod knock off.
I just purchased, but have yet to install;
a Rock River Arms National Match two-stage trigger kit,
a JP Enterprises reduced power spring kit and
a Spikes Tactical Dynacomp Extreme 308 (Model SBV1019) muzzle brake.
This wbesite and forum have already proven very helpful.