2A ARMAMENT Balios Lite Billet Upper Receiver

GUNTEC AR15 SLABSIDE STRIPPED BILLET UPPER RECEIVER BLACK

AERO PRECISION M5 .308 Stripped Upper Receiver - Anodized Black

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

Radian Weapons R0027 Complete Upper 300 Blackout 9" Black Barrel, 7075-T6 Aluminum Radian Black Receiver, Extended with Magpul M-LOK Handguard for AR-15

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

BUSHMASTER M4 Type Patrolman Flat Top A4 Upper 5.56 16" Black

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