ODIN Works 18in 223 Wylde Barrel, 3-Gun Profile, Rifle Gas Placement, W/Tunable GB, Stainless Steel, 18In, B-223-18-3G-R-TG

ODIN Works 7.5in 223 Wylde Barrel, Medium Profile, Pistol Gas Placement, W/Tunable GB, Stainless Steel, 7.5In, B-223-7.5-P-TG

Radian Weapons Model 1 Complete Upper Receiver, .223 Wylde, 16 in Barrel, Custom, Mid Length, 1-8 Twist, 1/2X28 Thread, M-LOK, Deadair Flash Hider, FDE, R0473

Watchtower Firearms 16in .223 Wylde Standard Fluted Barrel, Silver, BRL-16-STD-223

Ballistic Advantage Premium Barrel, AR-15, .223 Wylde, 16In, Tactical Government Contour, 1/8 Twist, 1/2X28 Thread, QPQ Corrosion Resistant, Black, BABL223016PQ

Primary Weapons Systems MK114 MOD2-M Upper Receiver, .223 Wylde, 14.5in Bbl, No Compensator, Black, MK1-M2U-223-14-NC

Rainier Arms Match .223 Wylde Lightweight Barrel, 7.5In, 1-8 Twist, 1/2X28, Silver, Small, RAB-M-223-LW-75-P-NF--SAT

Ballistic Advantage Premium Series Barrel, .223 Wylde, 20 Inch, SPR-Fluted, Rifle, 1-8 Twist, Stainless Steel, BABL223022PL

Rainier Arms Match .223 Wylde Lightweight Barrel, 14In, 1-8 Twist, 1/2X28, Silver, Small, RAB-M-223-LW-145-M-NF-SAT

Ballistic Advantage Premium Series Barrel, .223 Wylde, 14.5 Inch, SPR-Fluted, Mid, 1-8 Twist, Stainless Steel, BABL223028PL

Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18In, Wylde SS QPQ Rifle Length, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, Black Anodized, APAR700705M73

Rainier Arms Match .223 Wylde Barrel, 10.5In, 1-8 Twist, 1/2X28, Silver, Small, RAB-M-223-105-C-NF-SAT

Blackout Defense Complete Dual Taper Lock .223 Wylde Upper Receiver Group, Slick Side, 14.5in Mid, Grey, URG-DTL-223W-14.5-SLICK-GRY

Primary Weapons Systems MK111 MOD2-M Upper Receiver, .223 Wylde, 11.85 Inch Barrel, Matte, Black, MK1-M2U-223-11

Alpha Shooting Sports 16 in .223 Wylde Hybrid Barrel, 5.56, 1-8 Twist, Mid Length, ALP16223WCMID8HYBNIT

Rainier Arms Match Series .223 Wylde AR-15 Threaded Barrel, 16 Inch, Lightweight Profile, Mid Length, 1-8 Twist, 1/2 X 28, Black, Medium, RAB-M-223-LW-16-M-NF-BLK

Blackout Defense Complete Dual Taper Lock .223 Wylde Upper Receiver Group, Slick Side, 14.5in Mid, FDE, URG-DTL-223W-14.5-SLICK-FDE

Ballistic Advantage Premium Series Barrel, .223 Wylde, 18 Inch, SPR, Rifle, 1-8 Twist, 1/2 X 28 Thread, Anodized, Black, BAUR10007

Rainier Arms Match Series .223 Wylde AR-15 Threaded Barrel, 10.5 Inch, Lightweight Profile, Carbine Length, 1-8 Twist, 1/2 X 28, Black, Medium, RAB-M-223-LW-105-C-NF-BLK

Blackout Defense Complete Dual Taper Lock .223 Wylde Upper Receiver Group, Slick Side, 12.5in Interpose, Black, URG-DTL-223W-12.5-SLICK-BLK

ODIN Works 10.5' 223 Wylde Barrel, Light Profile, Carbine Gas Placement, W/Tunable GB, Stainless Steel, 10.5', B-223-10-UL-C-TG

Blackout Defense Complete Dual Taper Lock .223 Wylde Upper Receiver Group, Slick Side, 14.5in Mid, Green, URG-DTL-223W-14.5-SLICK-GRN

Primary Weapons Systems MK116 MOD2-M Upper Receiver, 16in Bbl, .223 Wylde, 3-Setting Adjustable Gas System, FSC556 Compemsator, Black, MK1-M2U-223-16

Primary Weapons Systems MK116 MOD1-M Upper Receiver, 16 Inch Barrel, .223 Wylde, 3-Setting Adjustable Gas System, FSC556 Compensator, Matte, Black, MK1-M1U-223-16

FM Products Mike-15 .223 Wylde Gen 2 Complete Upper Receiver, 22.25 Inch, 12.5 Inch Barrel, Mid Length, 1-8 Twist, 1/2X28 Thread, Free-Float, Nitride, Black, MIKE15U-223-G2-12.5M-2

Primary Weapons Systems MK114 MOD1-M Upper Receiver, .223 Wylde, 14.5in Bbl, No Compensator, Black, MK1-M1U-223-14-NC

Rock River Arms Upper Receiver, EOP .223 Wylde, 24 Inch Barrel, Varmint Profile, 1-12 Twist, Free-Float Handguard, Black, AR0580

Primary Weapons Systems MK111 MOD1-M Upper Receiver, .223 Wylde, 11.85in Bbl, Black, MK1-M1U-223-11

USED, Ballistic Advantage Premium Black Series Barrel, .223 Wylde, 16 Inch, Hanson, Mid, 1-8 Twist, Black, BABL223013PQ

Rainier Arms MK12 223 Wylde Partial Upper Receiver, Black, 18 In, RA-MK12-DI-18R-PU

Alpha Shooting Sports 7.5 in .223 Wylde Fluted Pistol Barrel, 5.56, 1-7 Twist, Pistol Length, ALP75-223FNIT

Hitman Industries AR-15 .223 Wylde Medium Rifle Barrel, 16 Inch, 1-7 Twist, Mid Length, Brick Flute, Nitride, Black, 223WM16MED416B7BF

Rock River Arms Upper Receiver, EOP .223 Wylde, 20 Inch Barrel, Varmint Profile, 1-8 Twist, Free-Float Handguard, Black, AR0560

Alpha Shooting Sports 16 in .223 Wylde SSR15 Upper Reciever, 1-8 Twist, Mid Length, 16223WSSR15