No forward assist - Wilson Combat AR-15 Billet Stripped Upper Receiver

True spec pic rail on top. The 'tighter raceway' has not proved beneficial nor a hindrance. After a few hundred rounds my BCG did minimally cut into the inner side (cam pin), probably from a sub par no name BCG. Charging handle also removed the anodizing/parkerizing/nitride where the latch catches but but no other issues. It's a good option for a slim line build.