F Aero Precision Complete Upper Receiver, M4E1-E, 5.56x45mm NATO, 20in, Government, Rifle Length, 1 in 7, 1/2 x 28, 15in, A2 Flash Hider, Cerakote, FDE, APAR640252M48 $554.99 APAR640252M48 show more like this Dvor