5.56x45mm NATO Upper Receivers

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

Battle Arms Development Billet Upper Receiver Fits FORTIS REV II Rail

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

Colt AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 11.5" Barrel

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

One Horse OH-15 Complete Pistol Upper 5.56 10.5 Barrel CH/BCG

Angstadt Arms Suppressor Series Handguard 14.8

Angstadt Arms Suppressor Series Handguard 9.3

POF-USA AR-15 Minuteman Complete Upper Receiver 5.56x45mm NATO 10.5" Barrel Carbine Length 9" M-LOK Handguard Patriot Brown

Daniel Defense DD4 RIII AR-15 Complete Upper Receiver 5.56x45mm 16" Barrel Mil-Spec+

Geissele USASOC URG-I Near Clone AR-15 Pistol Complete Upper Receiver Improved Complete 5.56x45mm NATO 10.3" Barrel with Surefire SF4P

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

Aero Precision M4E1 Enhanced Assembled AR-15 Upper Receiver Aluminum Black

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

Luth-AR A2 Upper Receiver 5.56 / .223 Rem

TacFire Dust Cover for AR-15

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

Colt AR-15 Complete Upper Receiver 5.56x45mm NATO 16" Barrel

One Horse OH-15 A3 Stripped Upper Multi-Cal

Noveske AR-15 N4 Infidel Pinned and Welded Complete Upper Receiver 5.56x45mm NATO 13.7" Barrel NSR-15 M-LOK Handguard Black

Radian Weapons Model 1 Complete Upper Gray .223 Wylde 14.5 P&W Barrel