DSI DS-15 STRIPPED BILLET UPPER AND LOWER RECEIVER SET ODG

GUNTEC AR15 SLABSIDE STRIPPED BILLET UPPER RECEIVER BLACK

AERO PRECISION M4E1 Stripped Lower Receiver ODG

TACFIRE AR-15 Billet Slick Upper Receiver Black

ONE HORSE AR15 A3 Stripped Upper Receiver Anodized

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

FAXON AR-15 X-TRA LITE RECEIVER SET OD GREEN STRIPPED

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