AERO PRECISION M4E1 Multi Caliber Complete AR15 Lower Receiver w/ A2 Grip & M4 Stock - FDE

Timber Creek Outdoors AR Lower Parts Kit for AR-15, Robin's Egg Blue - AR LPK RE

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

APF AR-15 Stripped Billet Lower Receiver - Matte Black

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

Timber Creek AR-15 Lower Parts Kit, OD Green - AR LPK OD