Andro Corp 5.56 AR-15 Barreled Upper Receiver with A2 Front Sight - 10.3"

Andro Corp Ind 5.56 NATO 16" 30rd Rifle - 55616BB

Aero Precision M4E1 Enhanced 5.56 10.5 Barrel Complete Upper Receiver

Anderson Manufacturing AM-15 Pistol 5.56 11.5 Barrel 30-Rounds MLOK

Anderson Manufacturing 24in Heavy Barrel 5.56/.2231-8 Twist Straight Fluted Stainless Rifle

Troy A4 Complete Upper 5.56 NATO / .223 Rem 10.5 Barrel

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

Aero Precision AR-15 Upper Assembly 5.56x45mm NATO 10.5" Barrel MOE Carbine Handguard Flat Dark Earth