Results for 5.56x45mm NATO Upper Receivers

Battle Arms Workhorse AR-15 Pistol Barreled Upper Receiver 5.56x45mm NATO 9.5" Barrel

Maxim Defense PDX AR-15 Complete Upper Receiver 5.56x45mm 5.5" Barrel Black

Maxim Defense PDX AR-15 Complete Upper Receiver 5.56x45mm 5.5" Barrel Arid

Sons of Liberty Gun Works AR-15 L89 Complete Upper Receiver 5.56x45mm 11.5" Barrel 10.75" L89 M-LOK Rail

Daniel Defense MK18 AR-15 Pistol Complete Upper Receiver 5.56mm NATO 10.3" Barrel Flat Dark Earth

Aero Precision AR-15 Barreled Upper Receiver 5.56x45mm NATO 20" Barrel A2 Handguard with Pinned FSB

Aero Precision AR-15 Barreled Upper Receiver 5.56x45mm NATO 16" Barrel MOE SL Mid-Length Handguard Black

Aero Precision AR-15 Barreled Upper Receiver 5.56x45mm NATO 10.5" Barrel MOE SL Carbine Handguard Black

Aero Precision AR-15 Barreled Upper Receiver 5.56x45mm NATO 16" Barrel MOE SL Mid-Length Handguard Flat Dark Earth

Aero Precision AR-15 M4E1-E Barreled Upper Receiver 5.56x45mm NATO 14.5" Barrel 12.7" ATLAS R-ONE Handguard Black

Aero Precision AR-15 M4E1 Barreled Upper Receiver 5.56x45mm NATO 16" Barrel Atlas S-One M-LOK Handguard Flat Dark Earth

Aero Precision AR-15 M4E1 Barreled Upper Receiver 5.56x45mm NATO 16" Barrel Atlas S-One M-LOK Handguard Black

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

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm 11.5" Cold Hammer Forged Barrel M-LOK Black

AR-STONER AR-15 Upper Receiver Kit

Aero Precision AR-15 M4E1-T Barreled Upper Receiver 5.56x45mm NATO 16" Barrel Mid Length Black

Aero Precision M4E1 Standard Stripped AR-15 Upper Receiver Aluminum Flat Dark Earth

Sons Of Liberty Gun Works EXO3 Complete Upper 5.56 NATO 16 Barrel

Aero Precision AR-15 Upper 5.56 NATO / .223 Rem 16 Barrel with M4 Handguard

Bushmaster Upper M4A3 223 16 inch Black

Del-Ton AR-15 Mid-Length Carbine Kit 5.56x45mm NATO 1 in 7" Twist 16" Chrome Lined Heavy Contour Barrel