RADICAL FIREARMS Upper Assembly 5.56 10.5" M4 Contour10" RPR

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

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

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

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

TACFIRE AR-15 Billet Slick Upper Receiver Black

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

GUNTEC AR15 SLABSIDE STRIPPED BILLET UPPER RECEIVER BLACK