223 Remington Upper Receivers & Conversion Kits

Daniel Defense DDM4v7 AR-15 Complete Upper Receiver 5.56x45mm NATO 16" Barrel

Daniel Defense M4A1 Block II AR-15 Complete Upper Recevier 5.56x45mm NATO 14.5" Pinned Barrel

Daniel Defense DDM4v7 Lightweight AR-15 Complete Upper Receiver 5.56x45mm NATO 16" Barrel

Noveske AR-15 Chainsaw Complete Upper Receiver 5.56x45mm NATO 16" Barrel NSR-15 M-LOK Handguard Black

Spikes Tactical ST-15 Enhanced Mid-Length Complete Upper 5.56 / .223 Rem 16-inch CHF

Spike s Tactical 16-inch AR-15 Complete Upper 5.56 NATO M4 LE with 9-inch Rail

Rock River Arms AR-15 Complete Upper Receiver 5.56x45mm NATO 16" Barrel

Battle Arms Development Workhorse AR-15 Upper 16 Barrel 5.56 NATO 15 M-LOK Handguard

HK MR556 A4 AR-15 Complete Upper Receiver 5.56x45mm NATO 16.5" Barrel

Radical Firearms Complete Upper Assembly .223 Rem/5.56 16 Barrel MLOK

Spike s Tactical Generation 2 Billet Upper 223 Remington 556NATO Mil-Spec Barrel Nut

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

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

Luth-AR AR-15 Lightweight Upper Receiver 5.56 NATO 16 Barrel

Sons of Liberty Gun Works Broadsword Upper Receiver .223 Wylde 14.5 P&W Barrel

Sons of Liberty Gun Works Broadsword Upper Receiver .223 Wylde 16 P&W Barrel

FightLite Industries DFX Upper 5.56 16.25 Threaded Barrel

Sons of Liberty Gun Works Broadsword Billet/L89 .223 Wylde Precision 14.5" Bbl L89 Rail P&W Plan B FH Upper Receiver U-BS-L89-556-145-PB

CMMG Bravo Rimfire AR-15 Conversion Kit with 3 10-Round Magazines 22 LR Stainless Steel

Daniel Defense AR-15 M4A1 FSP Block II Complete Upper Receiver 5.56x45mm 14.5" Pinned Surefire SF3P Flash Hider

Wilson Combat Upper Receiver

Yankee Hill Machine Stripped AR-15 A3 Upper Receiver Aluminum Black

Luth-AR A3 Ar-15 Stripped Upper Receiver FTT-EA .223Rem

Luth-AR A2 Stripped Upper Receiver 5.56 / .223 Rem