18" .223 Wylde Spiral Fluted Upper Assembly

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

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

Great Lakes Firearms GL15223S-SND 223 Wylde 16" 30+1 Serpent Sand/Nitride Barrel

Wraithworks WARP-15 | .223 Wylde | 16" 416-R Barrel

FAXON Match .223 Wylde 16in Spiral Fluted Rifle Barrel (15BW8M16SHQ-5R-NP3)

TacFire AR-15 .223 / 5.56 Unassembled Upper Receiver Kit - 10"

RADICAL FIREARMS 223 Rem/5.56 NATO 16in Black Complete Upper Assembly (CFU16-5.56SOC-15RPR)