AR-15 MIKE-9 8.5 COLT STYLE UPPER RECEIVER 9MM BLACK

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

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

GUNTEC AR15 SLABSIDE STRIPPED BILLET UPPER RECEIVER BLACK

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

AERO PRECISION M5 20" .308 CMV Complete Upper Receiver w/ ATLAS S-ONE M-Lok 15" Handguard

LEAD & STEEL All-Rounder Carbine Upper Receiver 5.56 14.5" FDE

AERO PRECISION M5 Complete Upper 22" 6.5 CM SS Fluted SM15 Ano