Results for 223 Remington SBR Barrels & Upper Receivers

HK MR556 A4 AR-15 Complete Upper Receiver 5.56x45mm NATO 11" Barrel

Colt AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 14.5" Barrel

Colt AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 11.5" Barrel

Battle Arms Workhorse AR-15 Pistol Barreled Upper Receiver 5.56x45mm NATO 9.5" Barrel

LBE UNLIMITED Cold Hammer Forged Bbl 5.56 7.5" Pistol AR-15 Blk

Lbe Unlimited Ar75rbk Ready Build Kit 7.5 Chf Barrel

Lbe Unlimited Ar145rbk 14.5 Upper Build Kit 223 Remington Chf Barrel

Lbe Unlimited Ar125rbk 12.5in CHF Barrel 223 Rem Pistol Length Upper Build Kit

Colt AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 14.5" Barrel CMR M-LOK Handguard

Lbe Unlimited Ar137rbk Upper Build Kit 223 Remington

Midwest Industries AR-15 Pistol Barreled Upper Receiver 5.56x45mm NATO 10.5" Barrel

LUTH-AR Govt Profile Barrel 11.5" 223/5.56 Black 1:7

Mcx-Spear Lt Ar Conversion Kit 5.56 Nato - Mcx-Spear Lt Ar Conversion Kit 5.56 Nato 11.5'''' Black

FightLite DFX AR-15/M16/M4 .223 Remington/5.56x45mm NATO 12.5in Upper Receiver Heavy Short-Stroke Gas Piston 1-7 Twist 1/2x28 Manganese

Colt LE6933EPRII-PRO 5.56mm 16.1" Bbl Matte Black Metal MBUS Sights Surefire Muzzle Device Upper Receiver Conversion Kit LE6933-EPRII-PRO-SF3-CK

Colt LE6933EPRII-PRO 5.56mm 11.5" Bbl Matte Black Metal MBUS Sights HuxWerks Muzzle Device Upper Receiver Conversion Kit LE6933-EPRII-PRO-HUX-CK

Colt LE6933EPRII-SF3-CK 5.56mm 11.5" Bbl Matte Black MBUS Sights Surefire Muzzle Device Upper Receiver Conversion Kit LE6933-EPRII-SF3-CK

Colt LE6933EPRII-HUX-CK 5.56mm 11.5" Bbl Matte Black MBUS Sights Hux Werks Muzzle Device Upper Receiver Conversion Kit LE6933-EPRII-HUX-CK