RADICAL FIREARMS Upper Assembly 5.56 Socom 16" 12" RPR

AERO PRECISION M4E1-T 5.56 NATO 11.5" Complete Upper Receiver | Black

TACFIRE AR-15 Billet Slick Upper Receiver Black

GUNTEC AR15 SLABSIDE STRIPPED BILLET UPPER RECEIVER BLACK

Sons of Liberty Gun Works L89 Combat V2 AR-15 13.7" Pinned CMV 5.56 NATO Assembled Upper Receiver w/ NOX-9 Flash Hider

Sons of Liberty Gun Works SOLGW 14.50" Upper 5.56x45mm M-LOK Rail - Tactical Excellence - M4L89BSCHF14.5

AERO PRECISION M5 Complete Upper 22" 6.5 CM SS Fluted SM15 Ano

Wraithworks Billet Slick Side AR-15 Upper Receiver - Black | No Forward Assist or Brass Deflector