Ok I know I've posted pics of my Rock River before, but I have made a few changes.
First off I ditched the POS UTG quad rail and replaced it with a Diamond cut profile Yankee Hill Quad rail with a Midwest Industries low profile gas block.
I changed the standard charging handle to a Rainier Arms Raptor
Changed out the buffer setup to a JP enterprises Silent Captured Spring setup
Upgraded to a NiB BCG
Topped it off with a Nikon P-223 fixed 3 Power scope
And added a Noveske QD rear plate for my Magpul QD Sling to mount to.