PSA 16" Mid-length 5.56 NATO 1:7 Nitride Freedom Upper - with BCG and CH - 507281

DPMS DR-15 Oracle II Slick Side 16" 5.56 NATO M-Lok Upper

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

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

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

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

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

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