A2 Assembled Upper Receiver with Sight

XM-4 A2 4150 Chrome Lined Upper 16" "Colt 727 Style"

"Colt 727 Style" XM4 A2 Chrome Lined 1/7 Upper 14.5 SBR

11.5 5.56 1/7 CL A2 SBR Pistol Upper

5.56 16" Mid Length Gas A2 Chrome Lined 1/7

A2 10.5" SBR and Pistol Upper 1/7 Chrome lined (MK-18 Mod 0)

"Colt 727 Style" XM4 A2 Chrome Lined 1/7 Upper 14.5 ext A2

TNTE AR-15 HBAR Chrome Lined A2 1/9

5.56 M-16 A2 Style Upper 1/7 Chrome Lined

5.56 M-16 A2 Style Upper 1/9 Chrome Lined

.223 Wylde M-16 H-Bar DCM A2 Upper 1/8

5.56 Nato 1/7 A2 Blood Diamond Style Upper