PSA "M16A4" 20" Quad Rail Upper w/ BCG & CH

Faxon Firearms Ascent 16" Railed Upper .22 ARC Rifle-Length no BCG&CH, Black

Nordic Components 22RB Dedicated 16" Railed Upper .22LR 1:16 no BCG&CH, Black

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

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

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

Spike s Tactical 16-inch AR-15 Complete Upper 5.56 NATO M4 LE with 9-inch Rail

Spikes Tactical ST-15 Enhanced Mid-Length Complete Upper 5.56 / .223 Rem 16-inch CHF