RADICAL FIREARMS Upper Assembly 5.56 10.5" M4 Contour9" MHR

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

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

BEAR CREEK ARSENAL 5.56 NATO COMPLETE UPPER 10. BRL 1:7 TWIST CARBINE LENGTH GAS MLOK

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

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

AERO PRECISION M5 20" .308 CMV Complete Upper Receiver w/ ATLAS S-ONE M-Lok 15" Handguard

TACFIRE AR-15 Billet Slick Upper Receiver Black