PSA AR-15 Upper 5.56 16" Mid-Length 1/7 Nitride 13.5" M-LOK w/NiBx BCG & CH

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

Battle Arms Development Workhorse AR-15 Upper 16 Barrel 5.56 NATO 15 M-LOK Handguard

AR-STONER AR-15 Complete Upper Receiver 45 ACP 16" Barrel

Angstadt Arms AR-15 Complete 9mm Upper Assembly 6 Barrel

AR-STONER AR-15 Complete Upper Receiver 5.56x45mm NATO 16" Barrel

Nordic Components 22RB AR-15 Complete Upper Receiver 22 Long Rifle 16" Barrel

AR-STONER AR-15 Complete Upper Receiver 300 Blackout 16" Barrel