CMMG UPPER M4 5.56/16IN SSBB/

CMMG Resolute 16.10" Upper 5.56x45mm with 1:7 Twist Rate and M-LOK Rail - Mid-Length with Charging Handle - Armor Black - 55BB40BAB

CMMG Barrel Assembly 16.1 Inch 5.56 NATO/ 223 REM 4140CM Black

CMMG Resolute 16.10" Upper 5.56x45mm with 1:7 Twist Rate and M-LOK Rail - Mid-Length with Charging Handle - Midnight Bronze - 55BB40BMB

CMMG Dissent Mk4 5.56mm 16.1in Upper Group 1-7 Twist 1/2 X 28 TPI .750in 25.5in Anodized Black

CMMG DISSENT 9mm 16.1in Upper Receiver 1-10 Twist 1/2 X 28 TPI 25.5in Anodized Black

CMMG DISSENT Mk4 5.56x45mm NATO 10.5in Upper Receiver 1-7 Twist .750in 1/2 X 28 TPI Anodized Black

CMMG DISSENT Mk4 5.56x45mm NATO 6.5in Upper Receiver 1-7 Twist .750in 1/2 X 28 TPI Anodized Black