Have a KAC M5 rail system left from this build. Very light wear. No VFG or rail panels, just the rail and 203 adapter.
Knights Armament M5 rail system - $120 shipped CONUS.
Rock River A4 upper receiver - $110 SOLD
FNMI 20" USGI Profile 1/7RH twist (non F marked FSB) with White Oak Armament gas tube - $275 SOLD
Rock River Bolt Carrier and Bolt - $150 SOLD
Charging Handle - $25 SOLD
Knights Armament QD sling swivel adapter, rail mount - $35
Carry handle - SOLD
Tango Down rail panels - SOLD