2A ARMAMENT Palouse-Lite AR15 Forged Upper Receiver

TACFIRE AR-15 Billet Slick Upper Receiver Black

GUNTEC AR15 SLABSIDE STRIPPED BILLET UPPER RECEIVER BLACK

AERO PRECISION M4E1-T 5.56 NATO 11.5" Complete Upper Receiver | Black

Wraithworks Billet Slick Side AR-15 Upper Receiver - Black | No Forward Assist or Brass Deflector

ONE HORSE AR15 A3 Stripped Upper Receiver Anodized

Sons of Liberty Gun Works L89 Combat V2 AR-15 13.7" Pinned CMV 5.56 NATO Assembled Upper Receiver w/ NOX-9 Flash Hider

AERO PRECISION M4E1 Multi Caliber Complete AR15 Lower Receiver w/ A2 Grip & M4 Stock - FDE