Shop 54 Deals on .223 Remington Upper Receivers

Primary Weapons Systems MK116 Pro Upper 223 Wylde/556NATO 16.1" Barrel, Black - 19-PM116UA0B

Sons of Liberty Gun Works .223 Remington Upper with 16" Barrel, Black - EXO3UPPER16556

Bushmaster A3 Patrolman .223 Rem/5.56 16" Barrel Flat-Top Complete Upper Assembly - 91822

Aero Precision M4E1-T Upper Flat Dark Earth 5.56 14.5 Barrel No BCG/CH

Sharps Bros AR-15 223 Rem/556NATO Complete Upper Receiver - SBBU01

Troy Industries .223 Remington Upper with 16" Barrel, Black - SUPGA3M16BT00

Troy Industries .223 Remington Upper with 16" Barrel, Black - SUPGA4S16BT00

Radian Weapons Model 1 MOE Upper M-LOK Rail with Charging Handle, Black - Advanced Tactical - R0428

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

Tacfire Build Kit for AR-15 5.56 NATO/223 Remington Unassembled Rifle, Nitride Black - SSRK556LPK

HM Defense .223 Remington Upper with 16" Barrel, Black - 16MBUP556

Sons of Liberty Gun Works Veil Solutions .223 Remington/5.56x45mm 13.70", Tan

HM Defense .223 Remington Upper with 16" Barrel, Black - 16MBUP556L

Bushmaster 16" Classic Upper .223 Remington/5.56x45mm with 1:8 Twist Rate and M-LOK- Carbine-Length with BCG and CH- Black - 00-40011-BLK

HM Defense MonoBloc 9.5" AR-Style Upper Receiver 5.56x45mm/.223 Remington - 95MBUP556

Aero Precision M4E1 Enhanced Upper w/o Forward Assist, Black

Q LLC Sugar Weasel .223 Remington Upper with 13" Barrel, Black, Tan - ACCSW55613INUPPER

Aero Precision M4E1 Enhanced Assembled Upper Receiver, OD Green

Aero Precision M4E1 Enhanced Upper w/o Forward Assist, Flat Dark Earth

Bushmaster QRC II LTW 16" Classic Upper 5.56x45mm NATO 1:7 Carbine Length, Black

Larue Stripped Upper Receiver, Black

Spikes Tactical Cold Hammer Forged Barrel 5.56 NATO / .223 Rem 14.5 Barrel

FN 14" SCAR 16S Barrel, 1:7, .223 Remington - 98804

Bowden Tactical Pistol Build Kit, Black