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

14.5" 1/7 M4A1 Upper w/ extended A2 OEM

14.5" 1/7 M4A1 Upper w/ extended A2

5.56 16" 1/7 CL Upper with MI Combat QuadRail

14.7" 1/7 M4 4150 Profile w/A2

5.56 14.5" 1/7 CL Upper with MI Combat Rail

5.56 16" 1/7 CL Upper with MI Combat Rail

M4 Upper With BCM 12" QRF Upper CL

16" 1/7 Hammer Forged M4 4150