Daniel Defense MK18 Complete AR-15 Upper Receiver - 5.56 - 10.3" - FDE

DANIEL DEFENSE MK18 AR-15 Complete Upper Receiver Group (23-004-08013-006)

AERO PRECISION AC-15M RIFLE - 5.56 NATO 16" BBL BLACK

RADIAN WEAPONS Model 1 .223 Wylde 10.5in Black Complete Upper Receiver (R0023)

SPIKES TACTICAL Complete Upper 5.56x45 16" Black Mid-length AR15

Rock River Arms First Responder AR-15 556 Nato Carbine LAR-15 FR1072

RADIAN WEAPONS Model 1 .223 Wylde 14.5in Black Complete Upper Receiver (R0024)

RADIAN WEAPONS Model 1 223 Wylde 14.5in FDE Complete Upper (R0466)