Daniel Defense V7 Barreled AR-15 Upper Receiver - 5.56 - 11.5" - Primary Arms Exclusive

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

DANIEL DEFENSE DDM4 V7 5.56mm 16in Barrel Black Upper Receiver (23-128-02339-047)

ALEXANDER UPPER RECEIVER AR15 - PISTOL 50 BEOWULF 12" TB BLK

BATTLE ARMS Authority ELite Upper Recv 5.56 10.5" AR-15 Gray

BATTLE ARMS Workhorse Upper Recv 5.56 16" AR-15 Sniper Gray

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

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