AERO PRECISION M5 Complete AR10 Lower Receiver w/ MOE SL Grip & SL Carbine Stock - Black

AERO PRECISION M5 AR10 Carbine Complete Lower Receiver w/ A2 Grip - Black

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

White Label Armory WLA-LOW-1015-01 Lower Parts Kit For AR-15 Black

TacFire USA Made AR-15 Lower Parts Kit w/ Enhanced Pistol Grip - Tan

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

APF AR-15 Stripped Billet Lower Receiver - Matte Black

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