Foxtrot Mike Products 11.25" Barreled Upper Receiver - 10.5" M-LOK Rail with Muzzle Brake

Aero Precision M4E1-T Upper Flat Dark Earth 5.56 10.5 Barrel No BCG/CH

TacFire 10" Upper .45 ACP 1:16 Free Float M-LOK Picatinny Rail, Black

HM Defense 12.50" Classic Upper 5.56x45mm 1:8 M-LOK Rail Mid-Length with BCG and CH, Black - 125MBUP556

TacFire 4" Upper .45 ACP 1:16 Free Float M-LOK Picatinny Rail, 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

Aero Precision AR-15 Upper Assembly 5.56x45mm NATO 10.5" Barrel MOE Carbine Handguard Flat Dark Earth

FOXTROT MIKE 102 223 WYLDE G2 RFL 16" INTRMDITE GAS, ZHUKOV STOCK, MOE GRIP, 1-30RD