Fightlite Raptor Belt Fed Complete AR-15 Upper Receiver - 5.56 - 16.5"

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

Aero Precision M4E1 Threaded Barreled AR-15 Upper 5.56 Carbine Length ATLAS R-One - 16"

Foxtrot Mike Products MIKE-102 Gen 2 Complete AR-15 Upper Receiver - .223 Wylde - 12.5"

Bushmaster AR-15 Complete Upper Minimalist SD 556 Nato AR15 16" 90025

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

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