14.5" M4 Profile Upper Receiver/Barrel Assembly NFA

4150 Chrome Lined M-4 Upper

14.5" 1/7 M4 Upper w/ extended A2 OEM

14.5" 1/7 M4 Upper w/ extended A2

5.56 10.5" 1/7 CL Pistol Upper with MI MCombat Rail

14.7" 1/7 M4 4150 Profile w/A2

16" 1/7 Hammer Forged M4 4150

14.5" 1/7 Hammer Forged M4 4150 SBR

M4 Upper With BCM 12" QRF Upper CL

14.5" 1/7 Hammer Forged M4 4150 Profile w/ extended A2

M-4 Sopmod Block 1 FSB Upper

M-4A1 Sopmod Block 1 FSB Upper