223 Remington Upper Receivers

Sabre-15 Enhanced Builder Set - 13" QDSM V2 Rail, Moss Green

Sabre-15 Enhanced Builder Set - 9.75" QDSM V2 Rail, Blue Titanium

Sabre-15 Enhanced Builder Set - 9.75" QDSM V2 Rail, FDE

STNGR AR-15 .223 16in M-LOK Wylde Complete Upper Receiver w/15in VLCN Handguard BCG & CH OD Green Cerakote

STNGR AR-15 .223 16in M-LOK Wylde Complete Upper Receiver w/15in VLCN Handguard BCG & CH Flat Dark Earth Cerakote

STNGR AR-15 .223 16in M-LOK Wylde Complete Upper Receiver w/15in VLCN Handguard BCG & CH Black Anodized

JARD AR Side Charge .223/5.56 Upper Receiver Assembly Complete Black

JARD AR Left Side Charge Upper Reciever Complete w/o Bolt Black

Guntec USA AR-15 Stripped Billet Upper Receiver w/9in Ultralight Series M-Lok Handguard Flat Dark Earth

Guntec USA AR-15 Stripped Billet Upper Receiver w/10in Ultralight Series M-Lok Handguard Flat Dark Earth

Ascend Phoenix LH Billet Receiver Set

One Horse HBAR Complete Upper 5.56/.223 Rem 16" Barrel 15" M-LOK Handguard Nitride BCG & Charging Handle

One Horse Complete Upper Receiver 5.56/.223 Rem 16" Barrel 15" M-LOK Handguard Nitride BCG & Charging Handle

Daniel Defense DD4 RIII Complete Upper Receiver 16" Barrel FDE

Stag Arms 16" 15 L Tactical M-LOK Midlength Left-Handed Complete Upper-CA Compliant

Lantac SF15 Forged Receiver Set

Aero Precision M4E1 Builder Set w/ 15" ATLAS R-ONE M-LOK Handguard - Chocolate Chip Camo

Aero Precision M4E1 Builder Set w/ 9.3" ATLAS R-ONE M-LOK Handguard - Chocolate Chip Camo

Aero Precision M4E1 Builder Set w/ 9.3" ATLAS S-ONE M-LOK Handguard - Chocolate Chip Camo

Aero Precision M4E1 Builder Set w/ 9.3" Enhanced M-LOK Handguard - Chocolate Chip Camo

Aero Precision M4E1 Builder Set w/ 15" ATLAS R-ONE M-LOK Handguard - OD Snakeskin

Aero Precision M4E1 Builder Set w/ Enhanced M-LOK Handguard - OD Snakeskin - 10.7"

NBS Premium Series 16" Upper Assembly w/ BA Barrel and Geissele MK8 Handguard

NBS 16" Gov Mid M-LOK Upper Assembly - Black