223 Remington Upper Receivers

LBE Unlimited Ready Build Kit Complete Upper 5.56 / .223 Rem 14.5 Threaded Barrel Mid Length Handguard

LBE Unlimited AR-15 Ready Build Kit Complete Upper 5.56 13.7 Barrel

HM Defense MonoBloc Upper 5.56 NATO / .223 Rem 16 Barrel

One Horse OH-15 Complete Upper 5.56 16 Barrel SOCOM Profile

Spikes Tactical STU5435-R2S ST-15 Enhanced Mid Length Upper 5.56 16In

Midwest Industries AR-15 Pistol Barreled Upper Receiver 5.56x45mm NATO 10.5" Barrel

Spikes Tactical Complete Upper Receiver 5.56 NATO / .223 Rem 16 Barrel

LBE Unlimited AR-15 Ready Build Kit Complete Upper 5.56 / .223 Rem 7.5 Barrel

Colt AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 14.5" Barrel

Odin Works OTR-15 .223 Remington AR Lower, Black - OTR15ReceiverSet

Radian Weapons R0427 Model 1 Multi Caliber N/A Cerakote Ambidextrous

Radian Weapons Model 1 Builder Kit Black 5.56

Luth-AR AR-15 .223 Complete Upper Assembly 24 Barrel

LBE Unlimited Ready Build Kit Complete Upper 5.56 / .223 Rem 12.5 Barrel Mid Length Gas Handguard

Fortis Manufacturing License Gen 2 Receiver Set 5.56 NATO / .223 Rem Ambidextrous

Spikes Tactical Spider Receiver Set

Radian Weapons AX556 Builder Kit Radian Gray Multi-Cal

Wilson Combat AR-15 Receiver Set Anodized Black Closed Trigger Guard

Radian Weapons Model 1 Builder Kit Gray 5.56 14 Handguard

Radian Weapons R0404 Multi Caliber N/A Gray Cerakote Billet Upper Lower Set

Colt Firearms LE6920CK-NHG Upper Kit Black 5.56NATO/.223Rem 16-inch

One Horse HBAR Complete Upper 5.56 / .223 Rem 16 Barrel 15 M-LOK Handguard

Faxon FF-15 X-TRA Lite AR-15 Stripped Receiver Set Titanium Cerakote

Faxon FF-15 X-TRA Lite AR-15 Stripped Receiver Set Anodized Black