Aero Precision M4E1-T Complete Upper, 16 5.56mm Mid-Length Barrel, No Logo, Black

Aero Precision M4E1-T 16" Railed Upper 5.56x45mm 1:7 Mid-Length no BCG&CH, Black

Aero Precision M4E1-T 18" Railed Upper 5.56x45mm 1:7 Rifle-Length no BCG&CH, Black

Aero Precision M4E1-T 18" Railed Upper 5.56x45mm 1:7 Rifle-Length no BCG&CH, Black

Aero Precision M4E1 16" Railed Upper 5.56x45mm 1:7 Mid-Length no BCG&CH, Black

Aero Precision M4E1 Enhanced 16" Railed Upper 5.56x45mm 1:7 Carbine-Length no BCG&CH, Black

Aero Precision AR15 Complete Upper 16in 5.56 Mid-Length Barrel w/ Pinned FSB M4 Handguard Includes BCG & CH Anodized Black

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 16in 5.56 Mid RM15 Anodized Black