223 Remington Upper Receivers

PSA AR-15 Pistol Kit 10.5" CRBNE-Lgth Nitride 12" Slant M-Lok MOE - 5165448807

PSA 20" Rifle Length 1/7 Nitride 15" Lightweight M-lok Upper - With BCG & CH

PSA 16" M4 Carbine 1:7 Nitride 13.5" Lightweight M-Lok Freedom Upper w/ MBUS Sight Set - No BCG/CH

Maxim Defense MDX 505 PDX Mil-Spec Complete Upper - 5.5" Arid

JARD AR Side Charge .223/5.56 No Bolt Upper Receiver Assembly Black

Harrington & Richardson BLEM Retro 604 "Air Force" Complete Upper Receiver, 1/12 Twist, Gray

Harrington & Richardson Retro 604 "Air Force" Complete Upper Receiver, 1/12 Twist, Gray

Harrington & Richardson Retro M16A1 Upper Receiver, Gray, Blem

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm/.223 10.5in Carbine Moly Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm/.223 10.5in Carbine Moly Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard A2 Flash Hider

Forward Controls Design URF-F AR-15 Forged Upper Receiver

Fortis MFG AR-15 Billet Carbon Fiber Dust Cover

Ar-15 Qrb 2 Pin Upper Receiver Takedown Kit - Qrb 2 Pin Upper Receiver Takedown Kit Pistol Gas Tube

Ar-15 Qrb 2 Pin Upper Receiver Takedown Kit - Qrb 2 Pin Upper Receiver Takedown Kit Carbine Gas Tube

Ar-15 Qrb 1 Pin Upper Receiver Takedown Kit - Qrb 1 Pin Upper Receiver Takedown Kit Mid-Length Gas Tube

Bravo Company MFG (BCM) AR-15 Upper Receiver BFH(.2.23/5.56) 11.5

Bravo Company MFG (BCM) MK2 Standard Complete Upper W/RAIDER-M13 Handguard

Mil-Sport Ar15 Stripped Upper Receiver - Mil Sport Ar-15 Stripped Upper Receiver 16'''' Bbl Black

Anderson Manufacturing AR15-A3 Stripped Upper Receiver with Parts Kit

Aero Precision - M4E1 No Forward Assist Assembled Upper Receiver - 16\" Barrel - .223/5.56 - APAR612218M7

Ar-15 Stripped Upper Receivers - Ar-15 Stripped Upper Receiver No Auto Sear/Forward Assist