BLACK RAIN ORDNANCE Spec15 Forged Alum Upper Recv 16" 4150 Gas Barrel

Faxon Firearms M4 Button Rifled Barrel 5.56x45mm 16", Black

Faxon Firearms Mid-Length Button Rifled Gunner Barrel 5.56x45mm 16", Black

Faxon Firearms Mid-Length Button Rifled Pencil Barrel 5.56x45mm 16", Black

Black Rain Ordnance BRO24102501 Spec15 556 NATO 7" Black Nitride Steel Barrel, Tungsten Gray Cerakote Receiver, Black Stock

SPIKES TACTICAL Barrel 223/5.56 16" Hammer Forged fits AR Rifles

AERO PRECISION AR15 5.56 NATO / 223 Rem 20" Complete Upper Receiver w/ Carry Handle | Black

Radian Weapons R0027 Complete Upper 300 Blackout 9" Black Barrel, 7075-T6 Aluminum Radian Black Receiver, Extended with Magpul M-LOK Handguard for AR-15