LMT MRP-L M-Lok 13.25" Rifle Length Upper Receiver

CMMG Resolute 16.10" Upper 8.6 Blackout 1:3 M-LOK Rail Carbine-Length, Armor Black

LANTAC Urban Tactical Complete Upper Recvr 223Wylde 11.5"

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

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

BUSHMASTER QRC Upper 5.56 NATO 16" - Black

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