This receiver features a continuous 1913 Picatinny top rail and comes with a U.S. Flag laser engraved ejection port cover and forward assist installed. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil-spec M-16/M4 specifications and features M4 feed ramps. POF-USA builds all Minuteman, Wonder, and Renegade+ rifles using this upper receiver.